Spring mvc json 解析

在进行spring mvc 框架进行json数据的时候非常苦恼，因为一直报415的错误。

百度之后解决的方法是：json数据解析的配置jar包
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->

        <dependency>

            <groupId>com.fasterxml.jackson.core</groupId>

            <artifactId>jackson-core</artifactId>

            <version>2.7.3</version>

        </dependency>

        <!-- https://mvnrepository.com/artifact/org.codehaus.jackson/jackson-mapper-asl -->

         <dependency>

            <groupId>org.codehaus.jackson</groupId>

            <artifactId>jackson-mapper-asl</artifactId>

            <version>1.9.2</version>

        </dependency>

        <dependency>

            <groupId>com.fasterxml.jackson.core</groupId>

            <artifactId>jackson-databind</artifactId>
            <version>2.7.3</version>
        </dependency>

spring-servlet.xml 配置

     <bean id="mappingJackson2HttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
     <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
      <property name="messageConverters">
       <list>
        <ref bean="mappingJackson2HttpMessageConverter" />
       </list>
      </property>
     </bean>

java 代码

　controller

package com.mvc.controller;

import com.alibaba.fastjson.JSONObject;
import com.mvc.model.base.Result;
import com.mvc.service.test.TestService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

@RestController//ResponseBody+Controller注解（无法返回界面）
@RequestMapping("/test/")
public class TestController {
    @Autowired
    private TestService testService;
    @PostMapping("test")
    public Result<JSONObject> test(){
        System.err.println("进入访问接口");
        JSONObject res = new JSONObject();
        res.put("name","boom");
        res.put("title","coco");
        res.put("time",System.currentTimeMillis());
        Result<JSONObject> result = new Result<JSONObject>();
        result.setModle(res);
        return result;
    }
}

Result包装类

package com.mvc.model.base;

/**
 * 返回包装类
 * @param <T>
 */
public class Result<T> {
    private String mes;
    private T modle;
    private Integer status = 1;

    public String getMes() {
        return mes;
    }

    public void setMes(String mes) {
        this.mes = mes;
    }

    public T getModle() {
        return modle;
    }

    public void setModle(T modle) {
        this.modle = modle;
    }

    public Integer getStatus() {
        return status;
    }

    public void setStatus(Integer status) {
        this.status = status;
    }
}

–关键–

最可靠的方式是官网
版本更迭有些方法被遗弃或删除所以新版本的spring需要在官网进行查阅文档

spring 配置文件常用头文件

<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.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">
          </beans>