java如何使用JAXR和Resteasy、Angular和Wildfly10处理COR
我在wildfly 10上有一个resteasy Web服务，与我的angular客户端在同一台机器上
- 获取请求工作
- Put和delete被调用了2次，据我所知，这是因为飞行前的请求已经完成。一个
curl -X DELETE http://localhost:8080/resteasyWebServices-1.0-SNAPSHOT/company/57 -i可以很好地处理它，而无需执行两次请求。相反，当使用angular client调用时，restWebService会被调用两次
我试图添加一个corsFilter，但它不仅帮助我获取请求，而且没有帮助我解决问题
package com.solarity.app; // {{ groupId}}.app
import com.solarity.rest.CompanyRestService;
import com.solarity.rest.PersonRestService;
import org.jboss.resteasy.plugins.interceptors.CorsFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.Set;
@ApplicationPath("/")
public class InitApplication extends Application {
/**
*
*/
Set<Object> singletons;
HashSet<Class<?>> webServiceClasses;
public InitApplication() {
super();
webServiceClasses = new HashSet<>();
webServiceClasses.add(PersonRestService.class);
webServiceClasses.add(CompanyRestService.class);
singletons = new LinkedHashSet<>();
singletons.add(this.getCorsFilter());
}
@Override
public Set<Class<?>> getClasses() {
return webServiceClasses;
}
@Override
public Set<Object> getSingletons() {
return singletons;
}
private CorsFilter getCorsFilter() {
CorsFilter result = new CorsFilter();
result.getAllowedOrigins().add("http://localhost:4200");
return result;
}
}
我试图在我的Web服务中实现一个选项方法，但没有成功
package com.solarity.rest; // Note your package will be {{ groupId }}.rest
import com.solarity.entities.CompanyEntity;
import com.solarity.entities.PersonEntity;
import com.solarity.service.CompanyService;
import com.solarity.service.PersonService;
import com.solarity.util.ResponseUtil;
import org.apache.http.HttpStatus;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
/**
*
*
*/
@Path("/company")
public class CompanyRestService {
protected Logger logger = LoggerFactory.getLogger(getClass());
private CompanyService companyService = new CompanyService();
@GET // This annotation indicates GET request
@Path("/")
@Produces(MediaType.APPLICATION_JSON)
public Response getAll() {
Object response = null;
String errMsg = null;
int responseStatus = -1;
try {
this.logger.debug("companyServcfindAll----------------debug");
this.logger.warn("companyServcfindAll----------------WARN");
response = companyService.findAll();
} catch (Exception e) {
errMsg = "Error getting all persons";
logger.error(errMsg, e);
}
return ResponseUtil.getAlteredResponse(response, errMsg, responseStatus, HttpMethod.GET);
}
/**
* curl -X DELETE http://localhost:8080/resteasyWebServices-1.0-SNAPSHOT/company/57 -i
*
* @param id
* @return
*/
@DELETE
@Path("/{param}")
public Response delete(@PathParam("param") Integer id){
Object response = null;
String errMsg = null;
int responseStatus = -1;
try {
logger.debug("Deleting entity", id);
companyService.delete(id);
responseStatus = HttpStatus.SC_OK;
} catch (Exception e) {
errMsg = "Error Deleting Entity:" + id;
logger.error(errMsg, e);
response = errMsg;
responseStatus = HttpStatus.SC_METHOD_FAILURE;
}
return ResponseUtil.getAlteredResponse(response, errMsg, responseStatus, HttpMethod.DELETE);
}
/**
* Not working
* @return
*/
@OPTIONS
@Path("{path : .*}")
public Response options() {
return Response.ok("")
.header("Access-Control-Allow-Origin", "*")
.header("Access-Control-Allow-Headers", "origin, content-type, accept, authorization")
.header("Access-Control-Allow-Credentials", "true")
.header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS, HEAD")
.header("Access-Control-Max-Age", "1209600")
.build();
}
}//end Class
这是我的回答课
package com.solarity.util;
import org.apache.http.HttpStatus;
import javax.ws.rs.core.Response;
public class ResponseUtil {
/**
*
Built to counter a Angular cross-reference problem
Adapted for Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:8080/dlssResteasy1-1.0-SNAPSHOT/person/getPersonsAsJSON. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).
source answer https://stackoverflow.com/questions/23450494/how-to-enable-cross-domain-requests-on-jax-rs-web-services?answertab=votes#tab-top
More Documentation about CORS on https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS
* @param param the object to send if errorMsg is null
* @param errorMsg if not null sends an error code with error Message
* @param responseStatus response status which can be found from HttpStatus.* (if <= 0 will be taken from errorMsg, or ok)
* @return an altered response which is customized
*/
public static Response getAlteredResponse( Object param, String errorMsg, int responseStatus, String httpMethod ) {
Response result = null;
int rStatus = responseStatus;
if (errorMsg != null && responseStatus <= 0) {
rStatus = HttpStatus.SC_UNPROCESSABLE_ENTITY;
} else if (errorMsg == null && responseStatus <= 0){
rStatus = HttpStatus.SC_OK;
}
if ( errorMsg == null ) {
result = Response
.status(rStatus)
.entity(param)
.build();
}else{
result = Response.status(rStatus)
.entity(errorMsg)
.build();
}
return result;
}
}
下面是调试到FF的结果
# 1 楼答案
您可以在网络选项卡中查看Chrome DevTools的流量
# 2 楼答案
首先，有一个documentation about CORS我必须阅读才能理解，我无法避免，正如我所希望的那样
两个来自Angular的电话
我问题的部分答案实际上是Angular的两个电话
我不明白，每次在
httpclient.put()上对subscribe的调用完成时，调用就完成了HttpClient Documentation
所以我所做的是：
methodResult = httpclient.put('someUrl', someData, someHeader).subscribe({ data => { console.log('added') });abovePutMethod.subscribe( data => { doSomeThingWithComponentRefresh })再次调用因此，只需拨打一次订阅电话就解决了我的两次呼叫问题
对于CORS协议的其余部分
棱角客户端
Java Resteasy服务器
# 3 楼答案
向该线程添加选项请求和响应的副本（不是您创建的副本，而是您正在使用的包中的副本，如果您没有使用包，请查找一个），以查看配置有何问题
同时添加下一个帖子、GET、PUT等，包括请求和响应