Spring MVC 用Ajax请求传输对象且包含List集合 用Postman工具测试

网上看了一大堆例子,没一个一看就简单明了的

比如前端ajax请求又不显示具体json格式,测试谁愿意画个表单,引入jquery啥的太麻烦了，由于我现在这个项目我前后端分离，我负责写后台接口,画表单不现实所以用Postman工具测试

(ps:这个工具非常强大,打开就可上手,大大提高开发效率)

Postman下载地址https://dl.pstmn.io/download/latest/win64(这个是64位的)直接贴代码

java后台

 1.注意实体类参数前要加@RequestBody

 2.实体类放list对象 get set方法要加

    //实体类
     public class Plan implements Serializable {

	    /**
	     * 
	     */
	    private static final long serialVersionUID = 263086719818441670L;

	    private List<PlanDetail> planDetails;
	

	    public List<PlanDetail> getPlanDetails() {
		    return planDetails;
	    }

	    public void setPlanDetails(List<PlanDetail> planDetails) {
		    this.planDetails = planDetails;
	    }
    }
    
    //我的Controller中方法  注意实体类参数前要加@RequestBody
    @RequestMapping(value = "/add" ,method = RequestMethod.POST)
	@ResponseBody
	public ReturnResult add(@RequestBody Plan plan, String sessionId) throws Exception {
		//planService.insertPlan(plan);
		return ok("ok");
    }
    
    

3.spring-xxx.xml要配置如下代码

（注意比如下面这个类org.springframework.http.converter.json.MappingJackson2HttpMessageConverter

记得引用jackson 包）

<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <property name="messageConverters">
            <list>
                <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"/>
                <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <list>
                            <value>text/html; charset=utf-8</value>
                            <value>application/json;charset=UTF-8</value>
                        </list>
                    </property>
                </bean>
                <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <list>
                            <value>text/html; charset=UTF-8</value>
                            <value>application/json;charset=UTF-8</value>
                        </list>
                    </property>
                </bean>
            </list>
        </property>
    </bean>

Postman参数测试界面

后台debug显示界面如下图:

嘿嘿 简单吧~！