一，编写Filter过滤器
把下面代码放到你的springboot项目中就可以了
package com.qcl; import org.springframework.stereotype.Component; import java.io.IOException; import javax. servlet .Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletResponse; /** * 处理跨域问题 * qcl：微信2501902696 */ @Component public class OriginFilter implements Filter { @ Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { HttpServletResponse response = (HttpServletResponse) res; response.setHeader("Access-Control-Allow-Origin", "*"); response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE,PUT"); response.setHeader("Access-Control-Max-Age", "3600"); response.setHeader("Access-Control-Allow-Headers", "x-requested-with"); chain.doFilter(req, res); } @Override public void destroy() { } }
二，用js做下请求验证下
如我们需要请求
获取如下数据，是我部署在服务器上的，2020年到期，你也可以访问
{
"code": 100,
" msg ": "成功",
"data": 3
}
json请求
对应的js请求代码如下
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>js+springboot解决跨域请求</title> </head> <body> <script src=""> </script> <script> var baseUrl = ""; $(document).ready( function () { $("button").click(function () { $. ajax ({ url: baseUrl + "/pv/2048/list", success: function (result) { document.getElementById("p1").innerHTML = result; var str = JSON.stringify(result); //将JSON对象转化为JSON字符 var obj = JSON.parse(str); //由JSON字符串转换为JSON对象 console. log (str); console.log(obj); console.log(obj.data); console.log(result.msg); console.log(result.code); } }); }); }); </script> <p id="p1"></p> <button>获取其他内容</button> </body> </html>
请求效果如下
跨域请求
有任何关于编程的问题都可以留言或者私信我，我看到后会及时解答
编程小石头，码农一枚，非著名全栈开发人员。分享自己的一些经验，学习心得，希望后来人少走弯路，少填坑。
