Spring MVC --- 异步请求

1. web 

<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js">
    </script>
    <script>
        function fun1() {
            $.ajax({
                type:"post",
                url:"getJson.action",
                data:'{"name":"张三","money":"200"}',
                contentType:"application/json",
                success:function (data) {
                    alert(data);
                }
            });
        }
    </script>

<a href="/abc/findById.action?id=2">response---json</a>
<button onclick="fun1()">request---json</button>

2. Controller

    @RequestMapping("findById.action")
    public  @ResponseBody Account findById(Integer id){
        return accountService.findById(id);
    }

    @RequestMapping("getJson.action")
    @ResponseBody
    public  String getJson(@RequestBody Account account){
        return account.toString();
    }

3. pom.xml

    <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.10.1</version>
    </dependency>