在 Jersey REST 服务中调用 Google Geocode API 会导致内部 400 错误答案

【问题标题】：Call to Google Geocode API within Jersey REST Service causes internal 400 error在 Jersey REST 服务中调用 Google Geocode API 会导致内部 400 错误
【发布时间】：2019-07-03 19:12:54
【问题描述】：

我在尝试在后端的球衣 REST 服务调用中访问 Google Geocode API 时遇到问题。当我这样做时，它会在服务器上导致内部 HTTP 400 错误但是，直接通过浏览器或客户端调用调用 Geocode API 是可行的此外，调用调用另一个球衣休息服务的球衣 REST 服务也可以工作直接调用任何东西都有效。将 jersey 服务嵌套在另一个 jersey 服务中是可行的。但是在球衣服务中嵌套 Google API 调用失败。

呼叫定位服务（“A”）

JerseyClient client = JerseyClientBuilder.newClient();

JerseyWebTarget webTarget = client.target("http://localhost:8080/arenamaster-backend/api").path("tournaments").path("location");

JerseyInvocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON);

String input = "10621 Braddock Road – Ste B, Fairfax, VA 22032";

Response response = invocationBuilder
                .post(Entity.entity(input, MediaType.TEXT_PLAIN));

定位服务：("B")

@POST
@Path("/location")
@Consumes(MediaType.TEXT_PLAIN)
@Produces(MediaType.APPLICATION_JSON)
@CrossOrigin
public Response getLatLngFromAddress(String address) {
    LatLng latlng = LocationUtility.geocode(address);

    return Response.status(200).entity(latlng).build();     
}

位置实用程序地理编码器（“C”）的直接调用

String address = "10621 Braddock Road – Ste B, Fairfax, VA 22032";

LatLng latlng= LocationUtility.geocode(address); 

System.out.println(latlng);

调用 Google Geocode API ("D") 的地理编码函数

public static LatLng geocode(String address) {
    String address_key = address.replace(' ', '+');                 
    String API_key = "***hidden***";            

    String request = "https://maps.googleapis.com/maps/api/geocode/json?address=" + address_key + "&key=" + API_key;
    JerseyClient client = JerseyClientBuilder.newClient();

    JerseyWebTarget webTarget = client.target(request);

    JerseyInvocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_JSON);

    Response response = invocationBuilder
            .get(Response.class);

    if (response.getStatus()/100 != 2) {
        throw new RuntimeException("Failed : HTTP error code : "
                + response.getStatus());
    }

    String output = response.readEntity(String.class);

    LatLng latlng = null;

    try {
        JSONObject geocode = new JSONObject(output);
        JSONArray results = geocode.getJSONArray("results");
        JSONObject address_components = (JSONObject) results.get(0);
        JSONObject geometry = (JSONObject) address_components.get("geometry");
        JSONObject location = (JSONObject) geometry.get("location");
        latlng = new LatLng(location.getDouble("lat"), location.getDouble("lng"));
    }catch(Exception e) {
        e.printStackTrace();
    }

    return latlng;
}

在调用样本测试（“E”）中调用

//call within a call sample test
JerseyClient client = JerseyClientBuilder.newClient();

JerseyWebTarget webTarget = client.target("http://localhost:8080/arenamaster-backend/api").path("test").path("func1");

JerseyInvocation.Builder invocationBuilder = webTarget.request(MediaType.TEXT_PLAIN);


Response response = invocationBuilder
    .get(Response.class);

if (response.getStatus()/100 != 2) {
    throw new RuntimeException("Failed : HTTP error code : "
        + response.getStatus());
}

System.out.println("Output from Server .... \n");
String output = response.readEntity(String.class);
System.out.println(output);

在一个调用中调用两个测试服务端点（“F”）

@GET
@Path("/func1")
@Produces(MediaType.TEXT_PLAIN)
@CrossOrigin
public Response testFunc1() {
    System.out.println("1st service invoked");
    String response = "";

    response = TestDAO.callSecondService();

    return Response.status(200).entity(response).build();
}

@GET
@Path("/func2")
@Produces(MediaType.TEXT_PLAIN)
@CrossOrigin
public Response testFunc2() {
    System.out.println("2nd service invoked");
    String response = "";

    response = TestDAO.getMessage();

    return Response.status(200).entity(response).build();
}

在调用测试函数中调用：("G")

public static String callSecondService() {

    JerseyClient client = JerseyClientBuilder.newClient();

    JerseyWebTarget webTarget = client.target("http://localhost:8080/arenamaster-backend/api").path("test").path("func2");

    JerseyInvocation.Builder invocationBuilder = webTarget.request();


    Response response = invocationBuilder
            .get(Response.class);

    if (response.getStatus()/100 != 2) {
        throw new RuntimeException("Failed : HTTP error code : "
                + response.getStatus());
    }

    System.out.println("Output from Server .... \n");
    String output = response.readEntity(String.class);
    System.out.println(output);

    return output;
}

public static String getMessage() {
    return "Success!"; 
}

C-D 成功 E-F-G 成功 A-B-D 失败并在服务器控制台上打印下面的堆栈跟踪

    java.lang.RuntimeException: Failed : HTTP error code : 400
at utilities.LocationUtility.geocode(LocationUtility.java:38)
at services.TournamentAlphaService.getLatLngFromAddress(TournamentAlphaService.java:91)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:124)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:167)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:176)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:79)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:469)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:391)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:253)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:232)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:680)
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:392)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:365)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:318)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)

更新：

调用内调用测试（E-F-G）在以下行时正常工作

WebTarget webTarget = client.target("http://localhost:8080/arenamaster-backend/api").path("test").path("func3"); 被这个取代： WebTarget webTarget = client.target("https://en.wikipedia.org/wiki/List_of_HTTP_status_codes");

【问题讨论】：

您为什么不尝试阅读响应的正文，看看是否有任何类型的消息告诉您出了什么问题

标签： java rest jax-rs jersey-2.0

【解决方案1】：

阅读正文后发现 Google Geocode API 不接受非 UTF-8 字符编码。我不得不更改这一行以使其工作：

String request = "https://maps.googleapis.com/maps/api/geocode/json?address=" + new URLEncoder().encode(address_key, Charset.availableCharsets().get("UTF-8")) + "&key=" + API_key;

【讨论】：