Question

我在Spring Boot中运行localhost：8080时遇到错误404

错误

keydown: function(ev) {
  var self = $(this);

  clearTimeout(self.data('timer'));

  if (typeof self.data('xhr') === 'object' && 'abort' in self.data('xhr')) {
    self.data('xhr').abort();
  }

  var timer = setTimeout(function() {
    self.data('xhr', $.ajax({
      url: '/files/tags_autocomplete.php',
      dataType: 'JSON',
      success: function(tags) {
        $("ul").html(tags.output);
      }
    }));
  }, 500);

  self.data('timer', timer);

Structure

我的控制器类

 Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.

Tue Sep 27 14:44:36 EEST 2016
There was an unexpected error (type=Not Found, status=404).
No message available

我的build.gradle

package chi.student.controller;


import chi.student.model.Student;
import chi.student.repository.StudentRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class StudentController {
    private StudentRepository studentRepository;

    @Autowired
    @Qualifier(value = "studentRepository")
    public void setStudentRepository(StudentRepository studentRepository) {
        this.studentRepository = studentRepository;
    }


    @RequestMapping(value = "students", method = RequestMethod.GET)
    public String listStudents(Model model) {
        model.addAttribute("student", new Student());
        model.addAttribute("listStudents", this.studentRepository.findAll());
        return "students";
    }

    @RequestMapping(value = "/students/add", method = RequestMethod.POST)
    public String addStudent(@ModelAttribute("student") Student student) {
        if (student.getId() == 0) {
            this.studentRepository.save(student);
        } else {
            this.studentRepository.save(student);
        }
        return "redirect:/students";
              }

    @RequestMapping("/remove/{id}")
    public String removeStudent(@PathVariable("id") int id) {
        this.studentRepository.delete((long) id);
        return "redirect: /students";
    }

    @RequestMapping("edit/{id}")
    public String editStudent(@PathVariable("id") int id, Model model) {
        model.addAttribute("student", this.studentRepository.findOne((long) id));
        model.addAttribute("listStudents", this.studentRepository.findAll());
        return "students";

    }

    @RequestMapping("studentdata/{id}")
    public String studentData(@PathVariable("id") int id, Model model) {
        model.addAttribute("student", this.studentRepository.findOne((long) id));
        return "studentdata";

    }


    }

我做错了什么？它无法找到我的index.jsp和其他页面

的index.jsp

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.4.1.RELEASE")
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'spring-boot'

jar {
    baseName = 'gs-spring-boot'
    version =  '0.1.0'
}

repositories {
    mavenCentral()
}

sourceCompatibility = 1.8
targetCompatibility = 1.8

repositories {
    mavenCentral()
   }


dependencies {
    compile("org.springframework.boot:spring-boot-starter-actuator")
    compile("org.springframework.boot:spring-boot-starter-web")
    compile("org.springframework.boot:spring-boot-starter-thymeleaf")
    compile("org.springframework.boot:spring-boot-starter-data-jpa")
    compile 'org.springframework.boot:spring-boot-starter-tomcat'
    compile("org.springframework.boot:spring-boot-starter-security")
    compile("mysql:mysql-connector-java")

    testCompile('org.springframework.boot:spring-boot-starter-test')
    compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.0'
    compile group: 'org.apache.commons', name: 'commons-digester3', version: '3.2'
    compile group: 'commons-logging', name: 'commons-logging', version: '1.1.1'



}

我应该在哪里提供index.jsp以使Controller看到它？

Answer 1

您需要将视图添加到映射中。

有两种不同的方法可以做到。

1）配置WebMvcConfigurerAdapter

@Configuration
public class MvcConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/index").setViewName("index");
     }
}

2）在控制器的请求映射中返回视图

@Controller
public class StudentController {
    ....
    @RequestMapping(value = "index", method = RequestMethod.GET)
    public String listStudents(Model model) {
        //your impl if is need
        return "index"; //or the view you want
    }
}

正如@wilsoncampusaon所说，你的观点应该是/src/main/resources/templates/。

Answer 2

默认情况下，spring boot上的viewresolver将在/ src / main / resources / templates /中查找视图。

我现在无法看到您的结构，但尝试将您的html视图移动到该文件夹。

本地主机Spring Boot中的错误404

2 个答案:

1）配置WebMvcConfigurerAdapter

2）在控制器的请求映射中返回视图