Jsp 视图页面不会在 Spring Boot 中呈现.如何解决? [英] Jsp view page is not rendered in Spring boot. How to solve it?

问题描述

我正在尝试发出一个 ajax 请求，该请求将一个值发送到我的 Spring Boot.但是，一旦我合并了 ajax 调用并且它成功地将值传递给 java，它就不会查看 jsp 页面.我相信问题出在方法本身，但我不完全确定.我再次传递了值，但是每当我使用 ModelAndView 或 Model 时，它似乎不会相应地更改页面.

JSP:

 <脚本>var 章节测试 = ${ 章节 };var totalChapters = ChaptersTest.length;无功代码块；for (var i = 0; i < totalChapters; i++) {代码块 ='<div class="col-md-4">'+' <a class="chapter_link" data-link="' + ChaptersTest[i] + '" style="text-decoration: none; color: white"><div class="box warning">'+' <h3>'+ ChaptersTest[i] + '</h3>'+'</div></a></div>';$("#chapterArea").append(codeBlock);}//点击的链接$('.chapter_link').click(function () {console.log("你的功能被点击了");做某事()；});函数 doSomething() {var search2 = {章节":莱利"}$.ajax({类型:POST"，contentType: '应用程序/json;字符集=utf-8',数据类型:'json'，网址:/ajax"，数据:JSON.stringify(search2),成功:功能(结果){console.log("有点效果");}});}

Java:

@RequestMapping(value = "/ajax", method = RequestMethod.POST)public @ResponseBody String sectionView(@RequestBody BEntity benny, HttpServletRequest request) {String temp = benny.getChapter();ModelAndView secView = new ModelAndView();试试{secView.setViewName("viewsections.jsp");//不是发送jsp来改变页面} 捕获(异常 e){secView.setViewName("error.jsp");}System.out.println("测试1");返回秒视图；}

对象:

<预><代码>公共类 BEntity {私人字符串搜索；私人字符串章节；私人字符串部分；公共字符串 getSection() {返回部分；}公共字符串 getChapter() {返回章节；}公共字符串 getSearch() {返回搜索；}@覆盖公共字符串 toString() {return "这是搜索过的:" + search;}

解决方案

在您的控制器中，移除 @ResponseBody 注释并将返回类型更改为 ModelAndView.将 ajax 代码中的 dataType 更改为 html.

如果您没有正确配置视图，请在您的 application.properties 中将前缀和后缀设置为:

spring.mvc.view.prefix:/views/spring.mvc.view.suffix: .jsp

spring.mvc.view.prefix 是您的 jsp 文件所在文件夹的路径.

@RequestMapping(value = "/ajax", method = RequestMethod.POST)public ModelAndView sectionView(@RequestBody BEntity benny, HttpServletRequest request) {String temp = benny.getChapter();ModelAndView secView = new ModelAndView();试试{secView.setViewName("viewsections");//不是发送jsp来改变页面} 捕获(异常 e){secView.setViewName("错误");}System.out.println("测试1");返回秒视图；}

I am trying to make an ajax request that sends a value to my spring boot. However, once I incorporate the ajax call and it successfully passes the value to java it does not view the jsp page. I believe the issue is from the method itself, but I am not entirely sure. Again I have the values being passed, but whenever I use ModelAndView or Model it seems to not change the page accordingly.

JSP:

 <script>
        var chaptersTest = ${ chapters };
        var totalChapters = chaptersTest.length;
        var codeBlock;

        for (var i = 0; i < totalChapters; i++) {

            codeBlock =


                '<div class="col-md-4">' +

                ' <a class="chapter_link" data-link="' + chaptersTest[i] + '" style="text-decoration: none; color: white"><div class="box warning">' +

                '  <h3>' + chaptersTest[i] + '</h3>' +

                '  </div></a></div>';

            $("#chapterArea").append(codeBlock);
        }


        //clicked links

        $('.chapter_link').click(function () {
            console.log("YoUR fUNCtION IS cLICKED");
            doSomething();
        });



        function doSomething() {
            var search2 = {
                "chapter": "riley"
            }

            $.ajax({
                type: "POST",
                contentType: 'application/json; charset=utf-8',
                dataType: 'json',
                url: "/ajax",
                data: JSON.stringify(search2),
                success: function (result) {
                    console.log("It somewhat worked");
                }

            });

        }



    </script>

Java:

@RequestMapping(value = "/ajax", method = RequestMethod.POST)
    public @ResponseBody String sectionView(@RequestBody BEntity benny, HttpServletRequest request) {
        String temp = benny.getChapter();
        ModelAndView secView = new ModelAndView();

        try {
            secView.setViewName("viewsections.jsp");
            //It is not sending the jsp to change the page

        } catch (Exception e) {
            secView.setViewName("error.jsp");

        }


        System.out.println("Test 1");
        return secView;
    }

Object:

public class BEntity {

    private String search; 
    private String chapter;
    private String section; 

    public String getSection() {
        return section; 
    }


    public String getChapter() {
        return chapter; 
    }

    public String getSearch() {
        return search;
    }

    @Override
    public String toString() {
        return "This was searched: " + search;
    } 

解决方案

In your controller,remove @ResponseBody annotation and change the return type to ModelAndView. Change dataType to html in your ajax code.

If you have not configured view properly then, in your application.properties set the prefix and suffix as:

spring.mvc.view.prefix: /views/
spring.mvc.view.suffix: .jsp

spring.mvc.view.prefix is the path of the folder where your jsp files reside.

@RequestMapping(value = "/ajax", method = RequestMethod.POST)
public ModelAndView sectionView(@RequestBody BEntity benny, HttpServletRequest request) {
    String temp = benny.getChapter();
    ModelAndView secView = new ModelAndView();
    try {
        secView.setViewName("viewsections");
        //It is not sending the jsp to change the page
    } catch (Exception e) {
        secView.setViewName("error");
    }
    System.out.println("Test 1");
    return secView;
}

这篇关于Jsp 视图页面不会在 Spring Boot 中呈现.如何解决?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！