springmvc对json数据的处理

最新推荐文章于 2025-11-29 03:46:46 发布

原创最新推荐文章于 2025-11-29 03:46:46 发布 · 245 阅读

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#json #java #测试

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本文详细介绍了如何在Spring MVC 3及以上版本中使用Jackson库处理JSON数据，包括配置web.xml文件、创建dispatcher-servlet.xml、定义实体类及控制器类，并展示了一个简单的Ajax请求响应实例。

springmvc3以后就可以对json数据进行处理了。

对json数据进行处理就要加入jackson的jar包：

工程的结构如下：

1、web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app 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_2_5.xsd"
         version="2.5">

    <!-- 设置WEB请求转发器 -->
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>3</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>


</web-app>

新建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: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/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
       http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"
       default-lazy-init="true">

    <!-- Url handler mapping setting  -->
    <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
        <property name="order" value="0"/>
    </bean>

    <!-- Configures the @Controller programming model -->
    <mvc:annotation-driven/>

    <context:component-scan base-package="com.fkjy.webapps"/>

    <bean id="jacksonMessageConverter"
    		class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
    	</bean>
    	<bean
    		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    		<property name="messageConverters">
    			<list>
    				<ref bean="jacksonMessageConverter" />
    			</list>
    		</property>
    	</bean>

    <!-- View Resolver for JSPs -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="requestContextAttribute" value="rc"/>
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <!-- Add additional controller beans here -->
</beans>

实体类：

package com.fkjy.bean;

public class UserBean {

    private Integer id ;
    private String userName ;
    private String password ;
    private Integer age ;
    private String gender ;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }
}

Controller类：

package com.fkjy.webapps;

import com.fkjy.bean.UserBean;
import com.fkjy.bean.UserUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class UserBeanController {

    
    @RequestMapping("/add")
    public
    @ResponseBody
    UserBean getAjaxAddPage() {

        UserBean userBean = new UserBean();
        userBean.setId(1);
        userBean.setUserName("111111");
        userBean.setPassword("111");
        userBean.setAge(20);
        userBean.setGender("女");
        
        return userBean;
    }

}

访问发布的项目，接到如下的结果：