java - 'DELETE'、'PUT' 和 |'GET' item by id| 中不支持 Spring-boot
问题描述
我正在 Spring-boot 架构的帮助下使用 RESTful Web 服务测试一个简单的后端。现在我已经完成了后端,但我无法访问DELETE
,PUT
和GET
方法get item by id
(The other http methods work - GET all
and POST
)
用户控制器类
package com.pali.palindromebackend.api;
import com.pali.palindromebackend.business.custom.UserBO;
import com.pali.palindromebackend.business.util.EntityDTOMapper;
import com.pali.palindromebackend.dto.UserDTO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import javax.validation.Valid;
import java.sql.SQLException;
import java.util.List;
import java.util.NoSuchElementException;
@RestController
@RequestMapping("/api/v1/users")
public class UserController {
@Autowired
private UserBO bo;
@Autowired
private EntityDTOMapper mapper;
public UserController() throws SQLException{
}
@GetMapping(produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseStatus(HttpStatus.OK)
@ResponseBody
public ResponseEntity<List<UserDTO>> getAllUsers() throws Exception {
System.out.println("get");
return new ResponseEntity<List<UserDTO>>(bo.getAllUsers(), HttpStatus.OK);
}
@GetMapping(value = "/{userId}", produces = MediaType.APPLICATION_JSON_VALUE )
@ResponseStatus(HttpStatus.OK)
@ResponseBody
public ResponseEntity<Object> getUserById(@PathVariable Integer userId) throws Exception {
System.out.println("One");
try {
return new ResponseEntity<>(bo.getUser(userId), HttpStatus.OK);
} catch (NoSuchElementException e) {
return new ResponseEntity<>("No user found !!", HttpStatus.NOT_FOUND);
} catch (Exception e) {
return new ResponseEntity<>("Something went wrong !!", HttpStatus.INTERNAL_SERVER_ERROR);
}
}
@ResponseStatus(HttpStatus.CREATED)
@PostMapping(
produces = MediaType.APPLICATION_JSON_VALUE,
consumes = MediaType.APPLICATION_JSON_VALUE
)
@ResponseBody
public ResponseEntity<Object> saveUser(@Valid @RequestBody UserDTO dto) throws Exception {
System.out.println(mapper.getUser(dto));
try {
bo.saveUser(dto);
return new ResponseEntity<>(dto, HttpStatus.CREATED);
} catch (Exception e) {
return new ResponseEntity<>("Something went wrong", HttpStatus.INTERNAL_SERVER_ERROR);
}
}
@ResponseStatus(HttpStatus.CREATED)
@ResponseBody
@DeleteMapping("/{userId}")
public ResponseEntity<Object> deleteUser(@PathVariable Integer userId) throws Exception {
try {
bo.getUser(userId);
bo.deleteUser(userId);
return new ResponseEntity<>("Successfully deleted the user !!", HttpStatus.CREATED);
} catch (NoSuchElementException e) {
return new ResponseEntity<>("No user is found !!", HttpStatus.NOT_FOUND);
} catch (Exception e) {
return new ResponseEntity<>("Something went wrong!!", HttpStatus.INTERNAL_SERVER_ERROR);
}
}
@PutMapping(
value = "/{userId}",
produces = MediaType.APPLICATION_JSON_VALUE,
consumes = MediaType.APPLICATION_JSON_VALUE
)
@ResponseStatus(HttpStatus.OK)
@ResponseBody
public ResponseEntity<Object> updateUser(@Valid @RequestBody UserDTO dto, @PathVariable Integer userId)
throws Exception {
if (dto.getId() != userId) {
return new ResponseEntity<>("Mismatch userId !!", HttpStatus.BAD_REQUEST);
}
try {
bo.getUser(userId);
bo.updateUser(dto);
return new ResponseEntity<>(dto, HttpStatus.CREATED);
} catch (NoSuchElementException e) {
return new ResponseEntity<>("No user is found !!", HttpStatus.NOT_FOUND);
} catch (Exception e) {
return new ResponseEntity<>("Something went wrong !!", HttpStatus.INTERNAL_SERVER_ERROR);
}
}
}
AppInitializer 类
import com.pali.palindromebackend.util.LogConfig;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class PalindromeBackendApplication {
public static void main(String[] args) {
LogConfig.initLogging();
SpringApplication.run(PalindromeBackendApplication.class, args);
}
}
安全配置
@EnableWebSecurity
@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private MyUserDetailsService myUserDetailsService;
@Autowired
private JWTRequestFilter jwtRequestFilter;
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(myUserDetailsService);
}
@Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().disable().authorizeRequests()
.antMatchers("/api/v1/authenticate").permitAll()
.antMatchers("/api/v1/users").permitAll()
.anyRequest().authenticated()
.and().sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
http.addFilterBefore(jwtRequestFilter, UsernamePasswordAuthenticationFilter.class);
}
@Override
@Bean
protected AuthenticationManager authenticationManager() throws Exception {
return super.authenticationManager();
}
@Bean
public PasswordEncoder passwordEncoder() {
return NoOpPasswordEncoder.getInstance();
}
}
MyUserDetailsService
@Service
public class MyUserDetailsService implements UserDetailsService {
@Override
public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {
return new User("admin","admin",new ArrayList<>());
}
}
JWTRequestFilter
@Component
public class JWTRequestFilter extends OncePerRequestFilter {
@Autowired
private MyUserDetailsService myUserDetailsService;
@Autowired
private JWTUtil jwtUtil;
@Override
protected void doFilterInternal(HttpServletRequest req, HttpServletResponse res, FilterChain chain) throws ServletException, IOException {
final String authorizationHeader = req.getHeader("Authorization");
String userName = null;
String jwt = null;
if (authorizationHeader != null && authorizationHeader.startsWith("Bearer")){
jwt = authorizationHeader.substring(7);
userName = jwtUtil.extractUsername(jwt);
}
if (userName != null && SecurityContextHolder.getContext().getAuthentication() == null){
UserDetails userDetails = this.myUserDetailsService.loadUserByUsername(userName);
if(jwtUtil.validateToken(jwt,userDetails)){
UsernamePasswordAuthenticationToken usernamePasswordAuthenticationToken = new UsernamePasswordAuthenticationToken(
userDetails, null, userDetails.getAuthorities()
);
usernamePasswordAuthenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(req));
SecurityContextHolder.getContext().setAuthentication(usernamePasswordAuthenticationToken);
}
}
chain.doFilter(req,res);
}
}
CORS 过滤器
import org.springframework.stereotype.Component;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Component
public class CORSFilter extends HttpFilter {
@Override
protected void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws IOException, ServletException {
response.setHeader("Access-Control-Allow-Origin", "http://localhost:4200");
response.setHeader("Access-Control-Allow-Methods", "GET,POST,PUT,DELETE,OPTION");
response.setHeader("Access-Control-Allow-Headers", "Content-type,Authorization");
super.doFilter(request, response, chain);
}
}
我发送了GET http://localhost:8080/api/v1/users and
POST http://localhost:8080/api/v1/users headers with
{'name':'Charls','password':'asd123'}`(JSON 类型)并且这些都有效。
但是GET http://localhost:8080/api/v1/courses/3
- 通过 id 获取 Item ,DELETE localhost:8080/api/v1/users/3
并且PUT localhost:8080/api/v1/users/3
使用JSON head {"name": "Samwise Gamgee", "duration": "ring bearer"} -user update
.Those 方法不起作用:(
2021-05-20 12:55:01.798 WARN 15187 --- [nio-8080-exec-2] o.s.web.servlet.PageNotFound : Request method 'PUT' not supported
2021-05-20 12:55:32.746 WARN 15187 --- [nio-8080-exec-3] o.s.web.servlet.PageNotFound : Request method 'DELETE' not supported
在这里,当我生成请求时,甚至任何方法(PUT、DELETE、GET item by id)都不起作用。所以问题也不例外:(
解决方案
您需要为它们设置允许的方法。您可以为此添加一个 bean。
@Bean
public WebMvcConfigurer corsConfigurer() {
return new WebMvcConfigurer() {
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
.allowedOrigins("*")
.allowedMethods("GET", "PUT", "POST", "PATCH", "DELETE", "OPTIONS");
}
};
}
注意:这是允许所有来源的代码。您需要根据需要进行配置。
推荐阅读
- java - Internet Explorer 的 Selenium 问题:org.openqa.selenium.NoSuchElementException:无法使用 xpath 找到元素
- android - google play store 警告:App Bundle 包含原生代码,建议上传去混淆文件
- wpf - 在外部浏览器进程中拖放到 WEB 页面后,我的窗口 (WPF) 没有响应
- modbus - 为什么我们在 Modbus 中需要输入寄存器、线圈位和输入位
- opengl - OpenGL会在glInvalidBufferSubData()之后释放BO的部分吗?
- android - 如何使用 GridLayoutManager 从 recyclerView 动态设置 Item 的跨度大小?
- django - 为什么 Heroku 在我部署 Django 应用程序时给我一个 H10 错误
- angular - 制作角度图像裁剪器功能
- insert - 插入语句内的表中的自动增量 ID
- python - 尝试重置密码时出现 Djongo + Django + MongoDB Atlas DatabaseError