Spring 跨域请求

1.Jsp的跨域请求

后台jsp代码:

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%
String callback = request.getParameter("callback");
out.print(callback+"([{name:'jsonp',age:'30'},{name:'jack',age:'90'}]);");
out.print(callback);
%>

前端代码1:

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%
String callback = request.getParameter("callback");
out.print(callback+"([{name:'jsonp',age:'30'},{name:'jack',age:'90'}]);");
out.print(callback);
%>

前端代码2:

<script type="text/javascript">
    $.getJSON("http://localhost:8080/Jsonp/jsonp.jsp?callback=?", function(json){
        alert(json[0].name);
    });
</script>  

2.Spring 的跨域请求

下面给出一个Controller的例子;

/**
     * 获取单位信息列表json
* 注意这里把@ResponseBody 去掉了
     */
    @RequiresPermissions("sys:unitnew:view")
    @RequestMapping(value = "jsonp")
    public  void getListaa(HttpServletRequest request,HttpServletResponse response, Model model,
            @RequestParam(value = "pageNumber", defaultValue = PAGE_NO) int pageNumber,
            @RequestParam(value = "pageSize", defaultValue = PAGE_SIZE) int pageSize) {
        try {

            PageHelper.startPage(pageNumber, pageSize, true);
            Map<String, Object> params = builderParams(request, model);
            params.put("queryCondition", " AND deleted != 1 ");
            List<AssistantUnit> result = manger.findByParams(params);
            System.out.println("获取单位信息json:result:" + result.size());
            PageUtils<AssistantUnit> page = new PageUtils<AssistantUnit>(result);

            String aaa = JsonUtil.pojo2json(page);// 这个是把序列化
            String callback = request.getParameter("callback");
            //response.getWriter().print(callback+"([{name:'jsonp',age:'30'},{name:'jack',age:'90'}]);");
            response.getWriter().print(callback+"(["+aaa+"]);");
            response.getWriter().print(callback);    

        } catch (Exception e) {
            logger.warn("获取单位信息信息异常:", e);
        }

    }

前端调用:

下面是调用的地方:

这个在Load里面: addScriptTag('http://192.168.1.103:8080/aaaaa-web/unit/jsonp?callback=dosomething');

function addScriptTag(src) {
              var script = document.createElement('script');
              script.setAttribute("type","text/javascript");

              script.src = src;
              document.body.appendChild(script);
        }

        function dosomething(data) {
          console.log(data[0].endRow);
          console.log('Your public IP address is: bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb');
          console.log('Your public IP address is: bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb');
        };