SpringMVC后端返回数据到前端代码示例

2023-07-26 18:50:04 86

packagecontroller; importjava.util.List; importjavax.annotation.Resource; importmodel.Comment; importorg.springframework.beans.factory.annotation.Autowired; importorg.springframework.stereotype.Controller; importorg.springframework.stereotype.Service; importorg.springframework.web.bind.annotation.RequestMapping; importorg.springframework.web.servlet.ModelAndView; importservice.CommentService; @Controller //@RequestMapping("comment") publicclassCommentController{ @ResourceprivateCommentServicecommentService; @RequestMapping(value="showComments") publicModelAndViewtest(){ ModelAndViewmav=newModelAndView(); Listcomments=commentService.selectAllComment(); for(Commentcom:comments){ System.out.println(com.getC_text()); } mav.addObject("msg",comments); mav.setViewName("textIndex.jsp"); returnmav; } }

<%@pagelanguage="java"import="java.util.*"pageEncoding="UTF-8"%> <% Stringpath=request.getContextPath(); StringbasePath=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@tagliburi="http://java.sun.com/jsp/jstl/core"prefix="c"%> "rel="externalnofollow"> MyJSP'index.jsp'startingpage

${com.getUid()}:${com.getC_text()}:${com.getC_date()}

@Controller //@RequestMapping("comment") publicclassCommentController{ @ResourceprivateCommentServicecommentService; @RequestMapping(value="showComments") @ResponseBody publicListtest(){ Listcomments=commentService.selectAllComment(); for(Commentcom:comments){ System.out.println(com.getC_text()); } returncomments; } }

functionajax(opt){ opt=opt||{}; opt.method=opt.method.toUpperCase()||'POST'; opt.url=opt.url||''; opt.async=opt.async||true; opt.data=opt.data||null; opt.success=opt.success||function(){}; varxmlHttp=null; if(XMLHttpRequest){ xmlHttp=newXMLHttpRequest(); } else{ xmlHttp=newActiveXObject('Microsoft.XMLHTTP'); }varparams=[]; for(varkeyinopt.data){ params.push(key+'='+opt.data[key]); } varpostData=params.join('&'); if(opt.method.toUpperCase()==='POST'){ xmlHttp.open(opt.method,opt.url,opt.async); xmlHttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded;charset=utf-8'); xmlHttp.send(postData); } elseif(opt.method.toUpperCase()==='GET'){ xmlHttp.open(opt.method,opt.url+'?'+postData,opt.async); xmlHttp.send(null); } xmlHttp.onreadystatechange=function(){ if(xmlHttp.readyState==4&&xmlHttp.status==200){ opt.success(JSON.parse(xmlHttp.responseText)); } }; }

SpringMVC后端返回数据到前端代码示例

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