springmvc支持jsonp

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And an additional ControllerAdvice like this (see reference documentation):

@ControllerAdvicepublic class JsonpAdvice extends AbstractJsonpResponseBodyAdvice {    public JsonpAdvice() {        super("callback");    }}

That's it.

1,新建JsonpAdvice控制器增强

继承org.springframework.web.servlet.mvc.method.annotation.AbstractJsonpResponseBodyAdvice类

import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.AbstractJsonpResponseBodyAdvice;
@ControllerAdvice(basePackages = "com.xxx.web.controller.jsonp")
public class JsonpAdvice extends AbstractJsonpResponseBodyAdvice {
    public JsonpAdvice() {
        super("callback", "jsonp");
    }
}

2,需要jsonp的controller类使用@RestController注解

@RestController
@RequestMapping("/test")
public class RankingListController {
    @ResponseBody
    @RequestMapping(value = "/getPopularity", method = RequestMethod.GET, produces = "application/json;charset=UTF-8")
    //注意这里只能返回对象,JavaBean或JsonObject都可以，不能用String
    public JSONObject getPopularity() {
        return JSON.parseObject((String) redisClient.getObject(popularityRankingListKey));
    }
}

3,调用

方式一

<html>
<head>
<meta charset="UTF-8" />
<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
<div>
请用Chrome浏览器打开,返回结果在F12 Console日志显示。
</div>
<script language="JavaScript">
$(document).ready(function() {
$.ajax({
url:'http://localhost:8080/test/getPopularity',
dataType:'jsonp',
success:function(data){
console.log("返回Json:")
console.log(data)
}
});
});
</script>
</body>
</html>

方式二

http://localhost:8080/test/getPopularity?callback=jsonp

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