未找到Spring启动资源404错误html_Spring_Spring Boot_Web

未找到Spring启动资源404错误html

spring spring-boot web

未找到Spring启动资源404错误html,spring,spring-boot,web,Spring,Spring Boot,Web,我构建了一个名为Employer的crud应用程序。操作工作正常，但当在html控制台中显示它们时，显示未找到错误 : Resource not found 2019-07-29 05:04:25.834 DEBUG 18656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed 404 NOT_FOUND 2019-07-29 05:04:25.834 DEBUG 18656 --- [nio-8

我构建了一个名为Employer的crud应用程序。操作工作正常，但当在html控制台中显示它们时，显示未找到错误

: Resource not found
2019-07-29 05:04:25.834 DEBUG 18656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed 404 NOT_FOUND
2019-07-29 05:04:25.834 DEBUG 18656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : "ERROR" dispatch for GET "/error", parameters={}
2019-07-29 05:04:25.834 DEBUG 18656 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2019-07-29 05:04:25.834 DEBUG 18656 --- [nio-8080-exec-1] o.s.w.s.m.m.a.HttpEntityMethodProcessor  : Using 'application/json', given [*/*] and supported [application/json, application/*+json, application/json, application/*+json]
2019-07-29 05:04:25.834 DEBUG 18656 --- [nio-8080-exec-1] o.s.w.s.m.m.a.HttpEntityMethodProcessor  : Writing [{timestamp=Mon Jul 29 05:04:25 PDT 2019, status=404, error=Not Found, message=No message available,  (truncated)...]
2019-07-29 05:04:25.835 DEBUG 18656 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Exiting from "ERROR" dispatch, status 404
2019-07-29 05:04:37.741 DEBUG 18656 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : GET "/favicon.ico", parameters={}
2019-07-29 05:04:37.742 DEBUG 18656 --- [nio-8080-exec-3] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ResourceHttpRequestHandler [class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/], ServletContext resource [/], class path resource []]
2019-07-29 05:04:37.754 DEBUG 18656 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Completed 200 OK

：未找到资源
2019-07-29 05:04:25.834调试18656---[nio-8080-exec-1]o.s.web.servlet.DispatcherServlet:未找到已完成的404
2019-07-29 05:04:25.834调试18656---[nio-8080-exec-1]o.s.web.servlet.DispatcherServlet:“错误”调度获取“/错误”，参数={}
2019-07-29 05:04:25.834调试18656---[nio-8080-exec-1]s.w.s.m.m.a.RequestMappingHandlerMapping:映射到公共org.springframework.http.ResponseEntity org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error（javax.servlet.http.HttpServletRequest）
2019-07-29 05:04:25.834调试18656---[nio-8080-exec-1]o.s.w.s.m.m.a.HttpEntityMethodProcessor:使用'application/json'，给定[*/*]并支持[application/json，application/*+json，application/json，application/*+json]
2019-07-29 05:04:25.834调试18656---[nio-8080-exec-1]o.s.w.s.m.m.a.HttpEntityMethodProcessor:正在写入[{timestamp=Mon Jul 29 05:04:25 PDT 2019，状态=404，错误=Not Found，消息=No message available，（截断）…]
2019-07-29 05:04:25.835调试18656---[nio-8080-exec-1]o.s.web.servlet.DispatcherServlet:退出“错误”调度，状态404
2019-07-29 05:04:37.741调试18656---[nio-8080-exec-3]o.s.web.servlet.DispatcherServlet:GET“/favicon.ico”，参数={}
2019-07-29 05:04:37.742调试18656---[nio-8080-exec-3]o.s.w.s.handler.SimpleUrlHandlerMapping:映射到ResourceHttpRequestHandler[class path resource[META-INF/resources/]，class path resource[resources/]，class path resource[static/]，class path resource[public/]，ServletContext resource[/]，class path resource[]
2019-07-29 05:04:37.754调试18656---[nio-8080-exec-3]o.s.web.servlet.DispatcherServlet:完成200 OK

我尝试重新启动应用程序并更改实体的名称，但没有成功

EmployerController.java

package io.javabrains;

import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.hibernate.mapping.Index;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import io.javabrains.Entity.Employer;

@Controller
public class EmployerController {


    @Autowired
    private EmployerService service;




    @RequestMapping("/")
    public String newForm() {
        return "form1";
    }






     public List<Employer>getAllEmployers()
     {


        return  service.getAllEmployers();



     }

        @RequestMapping(value="/tables",method=RequestMethod.GET)

    public String getAllEmployers(Model model)
    {
         List<Employer>employers = service.getAllEmployers(); 
        model.addAttribute("Employer",employers);
        return "tables";
    }





      @RequestMapping("/employer/{id}") 
      public Employer getEmployer(@PathVariable Integer id) { 
          return service.getEmployers(id);
      }



    @RequestMapping(method=RequestMethod.POST,value="/employer")
    public void addEmployer(@RequestBody Employer employer) {
        service.addEmployer(employer);

    }


    @RequestMapping(method=RequestMethod.PUT,value="/employer/{id}")
    public void updateEmployer(@RequestBody Employer employer,@PathVariable int id) {
        service.updateEmployer(id,employer);
    }




      @RequestMapping(method=RequestMethod.DELETE,value="/create/{id}") 
     public void deleteEmployer(@PathVariable int id)
     {
          service.deleteEmployer(id);
     }




}

包io.javabrains；
导入java.util.List；
导入javax.servlet.http.HttpServletRequest；
导入org.hibernate.mapping.Index；
导入org.springframework.beans.factory.annotation.Autowired；
导入org.springframework.stereotype.Controller；
导入org.springframework.ui.Model；
导入org.springframework.web.bind.annotation.ModelAttribute；
导入org.springframework.web.bind.annotation.GetMapping；
导入org.springframework.web.bind.annotation.PathVariable；
导入org.springframework.web.bind.annotation.RequestBody；
导入org.springframework.web.bind.annotation.RequestMapping；
导入org.springframework.web.bind.annotation.RequestMethod；
导入org.springframework.web.bind.annotation.RestController；
导入io.javabrains.Entity.Employer；
@控制器
公共类EmployeerController{
@自动连线
私人雇员服务；
@请求映射（“/”）
公共字符串newForm（）{
返回“form1”；
}
公共列表GetAllEmployers（）
{
return service.getAllEmployers（）；
}
@RequestMapping（value=“/tables”，method=RequestMethod.GET）
公共字符串getAllEmployers（模型）
{
Listemployers=service.getAllEmployers（）；
模型。添加属性（“雇主”，雇主）；
返回“表”；
}
@请求映射（“/employer/{id}”）
公共雇主getEmployer（@PathVariable整数id）{
返回服务。getEmployers（id）；
}
@RequestMapping（method=RequestMethod.POST，value=“/employer”）
公共无效addEmployer（@RequestBody-Employer）{
服务。雇主（雇主）；
}
@RequestMapping（method=RequestMethod.PUT，value=“/employer/{id}”）
public void updateEmployer（@RequestBody-Employer，@PathVariable-int-id）{
服务更新雇主（id，雇主）；
}
@RequestMapping（method=RequestMethod.DELETE，value=“/create/{id}”）
public void deleteEmployer（@PathVariable int-id）
{
服务。删除雇主（id）；
}
}

EmployerService.java

package io.javabrains;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import io.javabrains.Entity.Employer;

@Service
public class EmployerService {
    @Autowired
    private Repository repository;

    public List<Employer>getAllEmployers(){
        List<Employer>employers = new ArrayList<>();
        repository.findAll()
        .forEach(employers::add);
        return employers;

    }

    public void addEmployer(Employer employer) {
        repository.save(employer);
    }


    public void updateEmployer(int id, Employer employer) {
        repository.save(employer);
    }


    public void deleteEmployer(int id) {
        repository.deleteById(id);
        ;
    }



      public Employer getEmployers(int id) 
      { 
          return repository.getOne(id);

      }





}

包io.javabrains；
导入java.util.ArrayList；
导入java.util.List；
导入org.springframework.beans.factory.annotation.Autowired；
导入org.springframework.stereotype.Service；
导入io.javabrains.Entity.Employer；
@服务
公共类雇员服务{
@自动连线
私有存储库；
公共列表GetAllEmployers（）{
Listemployers=newarraylist（）；
repository.findAll（）
.forEach（雇主：：添加）；
返回雇主；
}
公共无效雇主（雇主）{
保存（雇主）；
}
public void updateEmployer（内部id，雇主）{
保存（雇主）；
}
公共部门（内部id）{
repository.deleteById（id）；
;
}
公共雇主（内部id）
{ 
返回repository.getOne（id）；
}
}

雇主：Java

package io.javabrains;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import io.javabrains.Entity.Employer;

@Service
public class EmployerService {
    @Autowired
    private Repository repository;

    public List<Employer>getAllEmployers(){
        List<Employer>employers = new ArrayList<>();
        repository.findAll()
        .forEach(employers::add);
        return employers;

    }

    public void addEmployer(Employer employer) {
        repository.save(employer);
    }


    public void updateEmployer(int id, Employer employer) {
        repository.save(employer);
    }


    public void deleteEmployer(int id) {
        repository.deleteById(id);
        ;
    }



      public Employer getEmployers(int id) 
      { 
          return repository.getOne(id);

      }





}

包io.javabrains；
导入java.util.ArrayList；
导入java.util.List；
导入org.springframework.beans.factory.annotation.Autowired；
导入org.springframework.stereotype.Service；
导入io.javabrains.Entity.Employer；
@服务
公共类雇员服务{
@自动连线
私有存储库；
公共列表GetAllEmployers（）{
Listemployers=newarraylist（）；
repository.findAll（）
.forEach（雇主：：添加）；
返回雇主；
}
公共无效雇主（雇主）{
保存（雇主）；
}
public void updateEmployer（内部id，雇主）{
保存（雇主）；
}
公共部门（内部id）{
repository.deleteById（id）；
;
}
公共雇主（内部id）
{ 
返回repository.getOne（id）；
}
}

table.html

 <tbody>
                    <tr th:each="$(employers)">
                      <td th:text="${employers.name}"></td>
                      <td th:text="${employer.position}"></td>
                      <td th:text="${employer.office}"></td>
                      <td th:text="${employer.age}"></td>
                     <td th:text="${employer.salary}"></td>
                    </tr>


@RequestMapping(path="/template")
public ModelAndView getHelloTemplate(){
    ModelAndView model = new ModelAndView();
    model.setViewName("hello");
    model.addObject("message", "Hello World");
    return model;
}

<!--<dependency>-->
<!--<groupId>org.springframework.boot</groupId>-->
<!--<artifactId>spring-boot-starter-freemarker</artifactId>-->
<!--<version>2.1.2.RELEASE</version>-->
<!--</dependency>-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-thymeleaf</artifactId>
    <version>2.1.2.RELEASE</version>
</dependency>

@Controller(value = "tvGuideController")
public class TvGuideController {
    @RequestMapping(path="/template")
    public ModelAndView getHelloTemplate(){
        ModelAndView model = new ModelAndView();
        model.setViewName("hello");
        model.addObject("message", "Hello World");
        return model;
    }

    @RequestMapping(path="/template1")
    public String getHelloTemplate(Model model){
        model.addAttribute("message", "Hello World 1");
        return "hello";
    }

    @RequestMapping(path="/template2")
    public String getHelloTemplate(ModelMap model){
        model.addAttribute("message", "Hello World 2");
        return "hello2";
    }
}

git clone https://github.com/fiveobjects/reference.git
cd java/springboot
mvn spring-boot:run

http://localhost:8080/template
http://localhost:8080/template1
http://localhost:8080/template2