SpringMVC向前台传输 JSON数据
所需Jar包jackson-core、jackson-annotations和jackson-databind
在MVC的配置文件中加入<mvc:annotation-driven></mvc:annotation-driven>
一、 pom.xml
1 <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"> 2 <modelVersion>4.0.0</modelVersion> 3 <groupId>cn.mcs</groupId> 4 <artifactId>springmvc02</artifactId> 5 <version>0.0.1-SNAPSHOT</version> 6 <packaging>war</packaging> 7 8 <properties> 9 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 10 </properties> 11 12 <dependencyManagement> 13 <dependencies> 14 <dependency> 15 <groupId>io.spring.platform</groupId> 16 <artifactId>platform-bom</artifactId> 17 <version>2.0.0.RELEASE</version> 18 <type>pom</type> 19 <scope>import</scope> 20 </dependency> 21 </dependencies> 22 </dependencyManagement> 23 24 <build> 25 <finalName>activiti</finalName> 26 <plugins> 27 <plugin> 28 <groupId>org.apache.maven.plugins</groupId> 29 <artifactId>maven-surefire-plugin</artifactId> 30 <version>2.19</version> 31 <configuration> 32 <!-- Maven 跳过运行 Test 代码的配置 --> 33 <skipTests>true</skipTests> 34 </configuration> 35 </plugin> 36 </plugins> 37 </build> 38 39 <dependencies> 40 <!-- Junit 4.12 --> 41 <dependency> 42 <groupId>junit</groupId> 43 <artifactId>junit</artifactId> 44 <scope>test</scope> 45 </dependency> 46 <!-- javax.servlet --> 47 <dependency> 48 <groupId>javax.servlet</groupId> 49 <artifactId>javax.servlet-api</artifactId> 50 <scope>provided</scope> 51 </dependency> 52 <dependency> 53 <groupId>javax.servlet.jsp</groupId> 54 <artifactId>javax.servlet.jsp-api</artifactId> 55 <scope>provided</scope> 56 </dependency> 57 <dependency> 58 <groupId>javax.servlet</groupId> 59 <artifactId>jstl</artifactId> 60 </dependency> 61 <dependency> 62 <groupId>javax.servlet.jsp.jstl</groupId> 63 <artifactId>javax.servlet.jsp.jstl-api</artifactId> 64 </dependency> 65 <!-- EL --> 66 <dependency> 67 <groupId>javax.el</groupId> 68 <artifactId>javax.el-api</artifactId> 69 </dependency> 70 <dependency> 71 <groupId>org.glassfish</groupId> 72 <artifactId>javax.el</artifactId> 73 <scope>test</scope> 74 </dependency> 75 <!-- Log4j 1.2.17 --> 76 <dependency> 77 <groupId>log4j</groupId> 78 <artifactId>log4j</artifactId> 79 </dependency> 80 81 <!-- Spring 4.2.3.RELEASE --> 82 <dependency> 83 <groupId>org.springframework</groupId> 84 <artifactId>spring-core</artifactId> 85 </dependency> 86 <dependency> 87 <groupId>org.springframework</groupId> 88 <artifactId>spring-context</artifactId> 89 </dependency> 90 <dependency> 91 <groupId>org.springframework</groupId> 92 <artifactId>spring-context-support</artifactId> 93 </dependency> 94 <dependency> 95 <groupId>org.springframework</groupId> 96 <artifactId>spring-orm</artifactId> 97 </dependency> 98 <dependency> 99 <groupId>org.springframework</groupId> 100 <artifactId>spring-webmvc</artifactId> 101 </dependency> 102 <dependency> 103 <groupId>org.springframework</groupId> 104 <artifactId>spring-tx</artifactId> 105 </dependency> 106 <dependency> 107 <groupId>org.springframework</groupId> 108 <artifactId>spring-jdbc</artifactId> 109 </dependency> 110 <dependency> 111 <groupId>org.springframework</groupId> 112 <artifactId>spring-aspects</artifactId> 113 </dependency> 114 <dependency> 115 <groupId>org.springframework</groupId> 116 <artifactId>spring-messaging</artifactId> 117 </dependency> 118 <dependency> 119 <groupId>org.springframework</groupId> 120 <artifactId>spring-test</artifactId> 121 </dependency> 122 123 <!-- Jackson --> 124 <dependency> 125 <groupId>com.fasterxml.jackson.core</groupId> 126 <artifactId>jackson-core</artifactId> 127 </dependency> 128 <dependency> 129 <groupId>com.fasterxml.jackson.core</groupId> 130 <artifactId>jackson-annotations</artifactId> 131 </dependency> 132 <dependency> 133 <groupId>com.fasterxml.jackson.core</groupId> 134 <artifactId>jackson-databind</artifactId> 135 </dependency> 136 137 <!-- Commons --> 138 <dependency> 139 <groupId>commons-io</groupId> 140 <artifactId>commons-io</artifactId> 141 </dependency> 142 <dependency> 143 <groupId>commons-fileupload</groupId> 144 <artifactId>commons-fileupload</artifactId> 145 </dependency> 146 <dependency> 147 <groupId>commons-logging</groupId> 148 <artifactId>commons-logging</artifactId> 149 </dependency> 150 151 <!-- Mysql --> 152 <dependency> 153 <groupId>mysql</groupId> 154 <artifactId>mysql-connector-java</artifactId> 155 </dependency> 156 157 <!-- c3p0 --> 158 <dependency> 159 <groupId>com.mchange</groupId> 160 <artifactId>c3p0</artifactId> 161 </dependency> 162 163 <!-- hibernate-validator --> 164 <dependency> 165 <groupId>org.hibernate</groupId> 166 <artifactId>hibernate-validator</artifactId> 167 </dependency> 168 169 170 </dependencies> 171 172 173 </project>
二、web.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> 3 <!-- 项目名称 --> 4 <display-name>SSM</display-name> 5 6 <!-- 指定spring相关文件的位置 --> 7 <context-param> 8 <param-name>contextConfigLocation</param-name> 9 <param-value>classpath:spring-core.xml</param-value> 10 </context-param> 11 12 <!-- 配置字符集过滤器 --> 13 <!-- 必须配置在所有过滤器的前面 --> 14 <filter> 15 <filter-name>encodingFilter</filter-name> 16 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 17 <init-param> 18 <param-name>encoding</param-name> 19 <param-value>UTF-8</param-value> 20 </init-param> 21 </filter> 22 <!-- 配置项目的编码mapping --> 23 <filter-mapping> 24 <filter-name>encodingFilter</filter-name> 25 <url-pattern>/*</url-pattern> 26 </filter-mapping> 27 28 <!-- 开启spring功能 --> 29 <listener> 30 <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 31 </listener> 32 <!-- 防止内存溢出监听器 --> 33 <listener> 34 <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> 35 </listener> 36 37 <!-- 配置spring mvc --> 38 <servlet> 39 <servlet-name>springMvc</servlet-name> 40 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 41 <init-param> 42 <param-name>contextConfigLocation</param-name> 43 <param-value>classpath:spring-mvc.xml</param-value> 44 </init-param> 45 <load-on-startup>1</load-on-startup> 46 </servlet> 47 <!-- 配置spring mvc mapping --> 48 <servlet-mapping> 49 <servlet-name>springMvc</servlet-name> 50 <url-pattern>*.action</url-pattern> 51 </servlet-mapping> 52 53 <!-- 配置session超时时间，单位分钟 --> 54 <session-config> 55 <session-timeout>15</session-timeout> 56 </session-config> 57 58 <!-- 设置欢迎页面 --> 59 <welcome-file-list> 60 <welcome-file>/index.jsp</welcome-file> 61 </welcome-file-list> 62 63 <!-- 找不到页错误转向 --> 64 <error-page> 65 <error-code>404</error-code> 66 <location>/error/404.jsp</location> 67 </error-page> 68 <!-- 系统内部错误转向 --> 69 <error-page> 70 <error-code>500</error-code> 71 <location>/error/500.jsp</location> 72 </error-page> 73 </web-app>
三、Spring与SpringMVC的配置文件
1、Spring配置文件
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:jpa="http://www.springframework.org/schema/data/jpa" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 3 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd 4 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd 5 http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.8.xsd 6 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd"> 7 8 <!-- 配置自动扫描的包 --> 9 <context:component-scan base-package="cn.mcs"> 10 <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> 11 <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/> 12 </context:component-scan> 13 14 </beans>
2、SpringMVC的配置文件
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:context="http://www.springframework.org/schema/context" 5 xmlns:mvc="http://www.springframework.org/schema/mvc" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 7 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd 8 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd"> 9 10 <!-- 配置自动扫描的包，只扫描以下两种注解的文件 --> 11 <context:component-scan base-package="cn.mcs" use-default-filters="false"> 12 <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> 13 <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/> 14 </context:component-scan> 15 16 <!-- 配置视图解析器 --> 17 <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 18 <property name="prefix" value="/WEB-INF/views/" /> 19 <property name="suffix" value=".jsp" /> 20 </bean> 21 22 <!-- 静态资源处理 --> 23 <mvc:default-servlet-handler/> 24 25 <mvc:annotation-driven></mvc:annotation-driven> 26 27 28 </beans>
四、Controller代码
1 package cn.mcs.action; 2 3 import java.util.ArrayList; 4 import java.util.Date; 5 import java.util.LinkedHashMap; 6 import java.util.List; 7 import java.util.Map; 8 9 import org.springframework.stereotype.Controller; 10 import org.springframework.web.bind.annotation.RequestMapping; 11 import org.springframework.web.bind.annotation.ResponseBody; 12 13 import cn.mcs.entity.Employee; 14 15 @RequestMapping("/employee") 16 @Controller 17 public class EmployeeAction { 18 19 @ResponseBody 20 @RequestMapping("/getEmployee") 21 public Employee getEmployee() { 22 Employee employee = new Employee(1, "张三", "1", 5600d, new Date()); 23 24 return employee; 25 } 26 27 @ResponseBody 28 @RequestMapping("/getEmployeeList") 29 public List<Employee> getEmployeeList() { 30 List<Employee> employees = new ArrayList<Employee>(); 31 employees.add(new Employee(1, "张三", "1", 5600d, new Date())); 32 employees.add(new Employee(2, "李四", "2", 4600d, new Date())); 33 employees.add(new Employee(3, "王二麻", "1", 6600d, new Date())); 34 35 return employees; 36 } 37 38 @ResponseBody 39 @RequestMapping("/getEmployeeMap") 40 public Map<String, Object> getEmployeeMap() { 41 List<Employee> employees = new ArrayList<Employee>(); 42 employees.add(new Employee(1, "张三", "1", 5600d, new Date())); 43 employees.add(new Employee(2, "李四", "2", 4600d, new Date())); 44 employees.add(new Employee(3, "王二麻", "1", 6600d, new Date())); 45 46 Map<String, Object> map = new LinkedHashMap<String,Object>(); 47 map.put("total", employees.size()); 48 map.put("rows", employees); 49 50 return map; 51 } 52 53 @RequestMapping("/toEmployeeListPage") 54 public String toEmployeeListPage() { 55 return "employee/employeeList"; 56 } 57 58 59 60 }
五、Web页面代码
1 <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> 2 <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> 3 <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %> 4 5 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 6 <html> 7 <head> 8 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 9 <title>Insert title here</title> 10 11 <c:set var="path" value="${pageContext.request.contextPath}" /> 12 <link rel="stylesheet" type="text/css" href="${path}/jslib/easyui/jquery-easyui-1.4.4/themes/default/easyui.css"> 13 <link rel="stylesheet" type="text/css" href="${path}/jslib/easyui/jquery-easyui-1.4.4/themes/icon.css"> 14 15 <script type="text/javascript" src="${path}/jslib/easyui/jquery-easyui-1.4.4/jquery.min.js"></script> 16 <script type="text/javascript" src="${path}/jslib/easyui/jquery-easyui-1.4.4/jquery.easyui.min.js"></script> 17 <script type="text/javascript" src="${path}/jslib/easyui/jquery-easyui-1.4.4/locale/easyui-lang-zh_CN.js"></script> 18 19 </head> 20 <body class="easyui-layout" > 21 <div data-options="region:'center',fit:true,border:false" > 22 <a href="#" class="easyui-linkbutton" data-options="iconCls:'icon-add'">新增</a> 23 <a href="#" class="easyui-linkbutton" data-options="iconCls:'icon-edit'">修改</a> 24 <a href="#" class="easyui-linkbutton" data-options="iconCls:'icon-remove'">删除</a> 25 <table id="dg"></table> 26 </div> 27 28 <script type="text/javascript"> 29 $("#dg").datagrid({ 30 url: "${pageContext.request.contextPath }/employee/getEmployeeMap.action", 31 pagination: true, 32 singleSelect: true, 33 rownumbers: true, 34 columns:[[ 35 {field:'id',title:'ID',width:100,align:'center'}, 36 {field:'name',title:'职员名称',width:100,align:'center'}, 37 {field:'sex',title:'性别',width:100, 38 formatter: function(value){ 39 if (value == "1") { 40 return "男"; 41 } else { 42 return "女"; 43 } 44 }}, 45 {field:'salary',title:'薪水',width:100, 46 formatter: function(value){ 47 if (value == null) { 48 return "￥"+0; 49 } else { 50 return "￥"+value; 51 } 52 }}, 53 {field:'hireDate',title:'入职日期',width:100, 54 formatter: function (value, row, index) { 55 var date = new Date(value); 56 var datetime = date.getFullYear()+"年"+(date.getMonth()+1)+"月"+date.getDate()+"日"; 57 return datetime; 58 }} 59 ]], 60 }); 61 </script> 62 </body> 63 </html>
