vue与struct2的通信

说出去都是泪啊~~~

找了大半天，都是含糊其辞的答案，一点也找不到精准一点的答案。。。

来，上代码：

客户端

main.js 配置

import VueResource from 'vue-resource'
...
Vue.use(VueResource)
//以下代码必须写在Vue.use(VueResource)后面
Vue.http.options.emulateHTTP = true;
Vue.http.options.emulateJSON = true;

Vue.http.headers.common['Content-Type'] = 'application/json'
Vue.http.headers.common['Access-Control-Allow-Origin'] = '*'
Vue.http.headers.common['Accept'] = 'application/json, text/plain, */*'
Vue.http.headers.common['Access-Control-Allow-Headers'] = 'Origin, Accept, Content-Type, Authorization, Access-Control-Allow-Origin'

Hello.vue

注意配置jsonpCallback很重要

...
<script>
export default{
  ...
   methods:{
        login(){
            let data = {}
            this.$http.jsonp(this.url,{
                params:data,
                jsonp: 'callBackParam',
                jsonpCallback: "success_jsonpCallback"
                }
            ).then((res)=>{
                if(res.data){
                       console.log(res)
                }
            },(err)=>{              
                console.log(err)
            });
        }
   }
}
</script>
...

服务器端

HelloAction.java

注意最后返回的数据格式是："success_jsonpCallback(<json字符串>)"

...
public string hello(){
     JSONObject result = new JSONObject();
    result.put("status", "ok");
    ...
    try {
        HttpServletResponse response = ServletActionContext.getResponse();
        response.setContentType("text/html;charset=utf-8");
        Object o = "success_jsonpCallback("+result+")";
        PrintWriter out=response.getWriter();
    if(null!=o){
        out.print(o.toString());
    }
    out.flush();
    out.close();
    } catch (Exception e) {         
    e.printStackTrace();
    }
}
...

总结：填坑之路悠长悠长的，需保重身体啊~，T_T 千万别冲动啊~~