spring Posts

How to Find Root Cause of Error 400 on SpringMVC using Log4J

Error 400 is basically telling us that our request is syntactically incorrect. But it will need a while to found out which parameter is incorrect, especially when you are submitting a lot of parameters.

But do not worry, on SpringMVC we can always log which parameters causing error 400 using Log4J. Adding these values on your log4j.properties will display the error location.

log4j.logger.org.springframework.web=debug

And we can see the root cause on our log file,

2017-02-28 22:33:07,241 [DefaultHandlerExceptionResolver] DEBUG org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver:133 - Resolving exception from handler [public java.util.Map xxx.yyy.controller.ZZZController.saveZZZ(xxx.yyy.bean.DDDD,org.springframework.web.multipart.MultipartFile,org.springframework.web.multipart.MultipartFile,javax.servlet.http.HttpSession)]: org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'DDDD' on field 'rupiah': rejected value [100.000.000,000000]; codes [typeMismatch.DDDD.rupiah,typeMismatch.rupiah,typeMismatch.java.math.BigDecimal,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [DDDD.rupiah,rupiah]; arguments []; default message [rupiah]]; default message [Failed to convert property value of type 1 to required type 1 for property 'rupiah'; nested exception is java.lang.NumberFormatException]

As you can see, it happens because i expect a BigDecimal on my bean, but i send a String instead.

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[Java] Cara Cache Data Hasil Query dengan SpringMVC

Pada tulisan kali ini, saya coba membuat suatu metode caching untuk menyimpan data-data master kedalam memory, sehingga tidak perlu query ke database lagi. Hal ini cocok digunakan untuk menyimpan data-data master yang sangat jarang berubah, seperti kode provinsi ataupun kode cabang.

Okay, di tutorial ini saya menggunakan Spring MVC 4, Hibernate dan ehCache sebagai cache provider. Berikut adalah pom.xml yang digunakan,

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.edw</groupId>
    <artifactId>mavenproject5</artifactId>
    <version>1</version>
    <packaging>war</packaging>

    <name>mavenproject5</name>

    <properties>
        <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    
    <dependencies>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-web-api</artifactId>
            <version>6.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        
        
        <!-- Spring 4 dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>4.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>4.1.2.RELEASE</version>
         </dependency>
         
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.6</version>
        </dependency>
        
        
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.2.2</version>
        </dependency>
        
        <!--ehcache-->
        <dependency>
            <groupId>net.sf.ehcache</groupId>
            <artifactId>ehcache</artifactId>
            <version>2.7.0</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.5</version>
        </dependency>
        
        <!--hibernate-->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.3.8.Final</version>
        </dependency>
        
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <compilerArguments>
                        <endorseddirs>${endorsed.dir}</endorseddirs>
                    </compilerArguments>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.6</version>
                <executions>
                    <execution>
                        <phase>validate</phase>
                        <goals>
                            <goal>copy</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${endorsed.dir}</outputDirectory>
                            <silent>true</silent>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>javax</groupId>
                                    <artifactId>javaee-endorsed-api</artifactId>
                                    <version>7.0</version>
                                    <type>jar</type>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

Kemudian konfigurasi standard yang digunakan di SpringMVC, applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:cache="http://www.springframework.org/schema/cache"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
        http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">

    <context:annotation-config/>
    
    <tx:annotation-driven/>
    
    <cache:annotation-driven />
    
    <context:component-scan base-package="com.edw.mavenproject5.service"/>
    
     <!-- datasource  -->
    <bean id="ds" class="org.apache.tomcat.jdbc.pool.DataSource" destroy-method="close"
          p:driverClassName="com.mysql.jdbc.Driver" p:url="jdbc:mysql://localhost/test"
          p:username="root" p:password=""
          p:initialSize="10"
          p:maxActive="50"
          p:maxIdle="10"
          p:minIdle="3"
          p:maxWait="30000"
          p:removeAbandoned="true"
          p:removeAbandonedTimeout="30"
          p:validationQuery="SELECT 1" />
    
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"
        p:dataSource-ref="ds" p:configLocations="classpath:hibernate.cfg.xml" depends-on="ds">
        <property name="hibernateProperties">
            <value>
                hibernate.dialect=org.hibernate.dialect.MySQLDialect
                hibernate.query.substitutions=true
                hibernate.show_sql=true
                hibernate.enable_lazy_load_no_trans=true
            </value>
        </property>
    </bean> 
    
    <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>
    
    <bean id="cacheManager" 
          class="org.springframework.cache.ehcache.EhCacheCacheManager" 
          p:cache-manager-ref="ehcache"/>
    <bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"
          p:config-location="classpath:ehcache.xml"/>
    
</beans>

dan dispatcher-servlet.xml,

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">


    <context:component-scan base-package="com.edw.mavenproject5.controller" />
	
    <mvc:annotation-driven />
    <mvc:default-servlet-handler />

    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          p:prefix="/WEB-INF/jsp/"
          p:suffix=".jsp" />
</beans>

yang kemudian dipanggil dari web.xml,

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

Nah, ada satu konfigurasi xml yang penting dalam membuat cache. Yaitu ehcache.xml, disana disimpan nama cache serta lama waktu hidupnya

<?xml version="1.0" encoding="UTF-8"?>
<!--
    caching configuration
-->
<ehcache>
    
    <defaultCache
        maxElementsInMemory="5000"
        eternal="true"
        overflowToDisk="false"
        memoryStoreEvictionPolicy="LRU"
    />
    
    <!--2menit-->
    <cache name="duaMenit"
           maxElementsInMemory="10000"
           timeToLiveSeconds="120"
           memoryStoreEvictionPolicy="LRU" 
    />
    
    <!--1menit-->
    <cache name="satuMenit"
           maxElementsInMemory="10000"
           timeToLiveSeconds="60"
           memoryStoreEvictionPolicy="LRU" 
    />
</ehcache>

Nah sekarang kita buat class java-nya, dimulai dari service layer. Perhatikan annotation Cacheable, konfigurasi tersebut adalah konfigurasi yang menandakan lokasi method yang kita cache.

package com.edw.mavenproject5.service;

import com.edw.mavenproject5.bean.Dosen;
import java.util.List;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
@Transactional
public class DosenService {

    @Autowired
    private SessionFactory sessionFactory;
    
    @Cacheable(key = "#root.methodName", value = "duaMenit")
    public List<Dosen> getDosens() {
        return sessionFactory.getCurrentSession().createCriteria(Dosen.class).list();
    }
    
    @Cacheable(key = "#root.methodName + #idDosen", value = "satuMenit")
    public Dosen getDosen(String idDosen) {
        return (Dosen) sessionFactory.getCurrentSession().get(Dosen.class, idDosen);
    }
    
}

Yang kemudian dipanggil dari controller,

package com.edw.mavenproject5.controller;

import com.edw.mavenproject5.service.DosenService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class IndexController {
    
    @Autowired
    private DosenService dosenService;
    
    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String index(ModelMap modelMap){
        modelMap.put("dosens", dosenService.getDosens());
        return "index";
    }
    
    @RequestMapping(value = "/get", method = RequestMethod.GET)
    public String get(ModelMap modelMap, String id){
        modelMap.put("dosen", dosenService.getDosen(id));
        return "index";
    }
}

Dan berikut adalah ui yang digunakan untuk menampilkan hasil query didatabase,

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <h1>Hello World!</h1>
        
        <c:if test="${not empty dosens}">
        <table class="table table-hover table-striped">
            <thead>
                <tr>
                    <th>ID Dosen</th>
                    <th>Nama Dosen</th>
                </tr>
            </thead>
            <tbody>
            <c:forEach items="${dosens}" var="dosen">
                <tr>
                    <td>${dosen.iddosen}</td>
                    <td>${dosen.namadosen}</td>
                </tr>
            </c:forEach>
            </tbody>
        </table>
        </c:if>
        
        <c:if test="${not empty dosen}">
            <h1>Hello Dosen ${dosen.namadosen}!</h1>
        </c:if>
    </body>
</html>

Hasil akhirnya adalah sebagai berikut, data dengan kode 02 dan 321 sudah diubah secara langsung didatabase, namun walaupun browser di-refresh berulang kali, tetap menampilkan data yang lama, yaitu “Dodol” dan “Testing 123 123″.
capture1

Untuk sourcecode lengkapnya bisa diunduh di github, https://github.com/edwinkun/CachingWithSpringMVC. (*)

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Exception when Using Spring MVC 4 : No converter found for return value of type: class java.util.ArrayList

I had this exception when moving from Spring MVC 3 to SPring MVC 4, and trying to use @RestController. Here is the complete stacktrace,

 java.lang.IllegalArgumentException: No converter found for return value of type: class java.util.ArrayList
	at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:158)
	at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:133)
	at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:165)
	at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:80)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:126)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:806)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:729)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)

The solution is actually quite simple, just adding some library on pom.xml seems solve this probem,

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.8.1</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.8.1</version>
        </dependency>
Google+

ServletContext.getRealPath Always Return Null on Apache Tomcat 8

I met a very strange error, that somehow works on Tomcat 7, but not working on Tomcat 8. I’m using ServletContext’s class getRealPath method, for getting my application’s absolute file path. Here is my code,

@PostConstruct
    private void init() {
        try {
            // get report location
            String reportLocation = servletContext.getRealPath("WEB-INF");           
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
    }

On this code, i’m trying to get my report’s location and then processing it, by using servletContext.getRealPath. Which works well on my Apache Tomcat 7, but not well enough on Apache Tomcat 8. Somehow it always show null instead of the absolute path of my “WEB-INF” folder.

The workaround is actually quite simple, adding slash in front of “WEB-INF” make the problem disappear.

@PostConstruct
    private void init() {
        try {
            // get report location
            String reportLocation = servletContext.getRealPath("/WEB-INF");           
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
    }
Google+

Belajar Spring Security Sederhana

Beberapa hari yang lalu, gw ditanya oleh salah seorang temen gw, Ariestania Winda. Dia nanya, gimana caranya bikin validasi login sederhana dengan Spring Security. Oke, berikut adalah tutorial yang gw kasih ke dia. Semoga bisa bermanfaat untuk yang lain.

Semua dimulai dengan konfigurasi maven sederhana, berikut pom.xml yang gw punya,

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.edw</groupId>
    <artifactId>SpringSecurityExample</artifactId>
    <version>1.0</version>
    <packaging>war</packaging>

    <name>SpringSecurityExample</name>

    <properties>
        <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-web-api</artifactId>
            <version>6.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
            <scope>runtime</scope>
        </dependency>
        
        <!-- Spring 3 dependencies -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.1.1.RELEASE</version>
        </dependency> 
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.1.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.1.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.1.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>4.1.1.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
            <version>2.2</version>
        </dependency>
        
        <!-- Spring Security -->
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>3.2.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>3.2.5.RELEASE</version>
        </dependency>
        
        <!-- slf4j -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.5.6</version>
        </dependency>
        
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                    <compilerArguments>
                        <endorseddirs>${endorsed.dir}</endorseddirs>
                    </compilerArguments>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.1.1</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.1</version>
                <executions>
                    <execution>
                        <phase>validate</phase>
                        <goals>
                            <goal>copy</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${endorsed.dir}</outputDirectory>
                            <silent>true</silent>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>javax</groupId>
                                    <artifactId>javaee-endorsed-api</artifactId>
                                    <version>6.0</version>
                                    <type>jar</type>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

Kemudian register konfigurasi spring di web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml, /WEB-INF/applicationSecurity.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    <!-- Spring Security -->
    <filter>
        <filter-name>springSecurityFilterChain</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy
        </filter-class>
    </filter>
 
    <filter-mapping>
        <filter-name>springSecurityFilterChain</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
</web-app>

Dan 3 xml milik Spring, ApplicationContext.xml, dispatcher-servlet.xml dan applicationSecurity.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:jee="http://www.springframework.org/schema/jee"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <context:annotation-config/>
    
    <context:component-scan base-package="com.edw.springsecurityexample.controller"/>
</beans>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">


    <!-- the mvc resources tag does the magic -->
    <mvc:resources mapping="/css/**" location="/css/" />
    <mvc:resources mapping="/js/**" location="/js/" />
    <mvc:resources mapping="/img/**" location="/img/" />
    
    <context:component-scan base-package="com.edw.springsecurityexample.controller" />
	
    <mvc:annotation-driven />

    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          p:prefix="/WEB-INF/jsp/"
          p:suffix=".jsp" />
</beans>
<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/security"
             xmlns:beans="http://www.springframework.org/schema/beans" 
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans-4.0.xsd


http://www.springframework.org/schema/security


http://www.springframework.org/schema/security/spring-security-3.2.xsd">

    <http auto-config="true" use-expressions="true">
        <intercept-url pattern="/admin/**" access="hasRole('ROLE_USER')" />
        <intercept-url pattern="/" 	access="isAnonymous()"/>
        <form-login login-page="/" 
                    authentication-failure-url="/?error=1" 
                    default-target-url="/admin/index" always-use-default-target="true"/>
        <logout logout-url="/logout" logout-success-url="/" />
    </http>
 
    <authentication-manager>
        <authentication-provider>
            <user-service>
                <user name="edw" password="123456" authorities="ROLE_USER" />
            </user-service>
        </authentication-provider>
    </authentication-manager>
    
    
</beans:beans>

Lalu gw bikin satu java class sebagai controller,

package com.edw.springsecurityexample.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class IndexController {
    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String index() {
        return "index";
    }
    
    @RequestMapping(value = "/admin/index", method = RequestMethod.GET)
    public String adminIndex() {
        return "adminIndex";
    }
}

Kemudian satu jsp sederhana sebagai halaman login,

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <h1>Hello Spring MVC!</h1>
        <h2>Tolong Login Dulu </h2>
        
        <c:if test="${not empty param.error}">
                <div style="color: red;">
                    Username atau Password Salah
                </div>
        </c:if>
        
        <form action="j_spring_security_check" method="POST">
            <table>
                <tr>
                    <td>
                        username
                    </td>
                    <td>
                        <input name="j_username" type="text" />
                    </td>
                </tr>
                <tr>
                    <td>
                        password
                    </td>
                    <td>
                        <input name="j_password" type="password" />
                    </td>
                </tr>
                <tr>
                    <td colspan="2">
                        <input name="submit" type="submit" />
                    </td>
                </tr>
            </table>
        </form>
    </body>
</html>

Dan halaman admin sederhana, yang hanya bisa diakses apabila sudah login yang isinya link logout.

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head><a href="http://edwin.baculsoft.com/wp-content/uploads/2014/11/springsecurity-login-gagal.png"><img src="http://edwin.baculsoft.com/wp-content/uploads/2014/11/springsecurity-login-gagal.png" alt="springsecurity login gagal" width="458" height="287" class="aligncenter size-full wp-image-1535" /></a>
    <body>
        <h1>Selamat, anda sudah login -- admin page</h1>
        <br />
        <a href="${pageContext.request.contextPath}/logout">logout</a>
    </body>
</html>

Berikut adalah tampilan struktur netbeans project
springsecurity project structure

Tampilan halaman login, dan tampilan jika login gagal,
springsecurity login

springsecurity login gagal

Jika login dengan username edw dan password 123456, maka akan tampil halaman seperti berikut,
springsecurity login sukses

Source lengkapnya, bisa diakses di github saya, di url ini.

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