使用jquery实现js跨域

谁践踏了优雅 2022-08-06 13:16 169阅读 0赞

@Controller
    public class ApiController 
    {
    	@Path("/api/v1/user/get_user_info")
    	public void processUserInfo(HttpServletRequest req, HttpServletResponse resp)throws Exception
    	{
    		resp.setContentType("application/json");
    		
    		resp.setCharacterEncoding("UTF-8");
    		
    		String callback = req.getParameter("callback");
    		
    		PrintWriter out = resp.getWriter();
    		if(callback == null)
    		{
    			out.print(getUserInfo());
    		}
    		else
    		{
    			out.print(callback + "("+getUserInfo()+");");
    		}
    		out.close();
    	}
    	
    	private String getUserInfo()
    	{
    		Map<String, String> user = new HashMap<>();
    		user.put("id", "1");
    		user.put("phone", "10086");
    		user.put("name", "CMCC");
    		user.put("web_site", "http://www.10086.cn");
    		Gson g = new Gson();
    		return g.toJson(user);
    	}
    }

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
    <!DOCTYPE HTML>
    <html lang="zh-CN">
    <head>
    <meta charset="utf-8" />
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <title>jsky</title>
    <script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>
    </head>
    
    <body>
    <h1>jsky</h1>
    <div style="font-size:22px;color:red;" id="box">
    	
    </div>
    </body>
    <script type="text/javascript">
    (function ($, win, doc) {
    	$.ajax({
    		type: 'GET',
    		jsonp: 'callback',
    	    url: 'http://java.hqit.com/example/api/v1/user/get_user_info.do',
    	    data: 'version='+new Date().getTime(),
    	    success: function(resp){
    	    	var html = "";
    	    	html += 'id='+resp.id;
    	    	html += '<br />phone='+resp.phone;
    	    	html += '<br />name='+resp.name;
    	    	html += '<br />web_site='+resp.web_site;
    	    	$("#box").html(html);
    	    },
    	    dataType: 'jsonp'
    	});
    })(jQuery, window, document);
    </script>
    </html>