英文:
URISyntaxException while concatenating double quotes " " to a URL
问题
我有以下代码：
public List<Attraction> retrieveByQuery(String query, int page, int size) throws IOException, InterruptedException {
String URL = "http://mydomain/get-by-query?";
URL += "query=" + query + "&page=" + page + "&size=" + size;
HttpClient httpClient = HttpClient.newHttpClient();
HttpRequest httpRequest = HttpRequest
.newBuilder()
.GET()
.header("accept", "application/json")
.uri(URI.create(URL))
.build();
HttpResponse<String> httpResponses = httpClient.send(httpRequest, HttpResponse.BodyHandlers.ofString());
return null;
}
这个问题给我报了一个 URISyntaxException 错误。我认为问题出在 ""（双引号）上。
编辑
以下是带有异常和详细信息的完整堆栈跟踪：
在线程 "JavaFX Application Thread" 中出现异常 "java.lang.IllegalArgumentException: Illegal character in query at index 126: http://.../get-by-query?query=name=="Casa Lucio Dalla"&page=0&size=100
at java.base/java.net.URI.create(URI.java:883)
at dao_implementations.AttractionDAO_MongoDB.retrieveByQuery(AttractionDAO_MongoDB.java:119)
at controllers.CrudAttractionController.doRetrieveByQuery(CrudAttractionController.java:505)
...
随后是：
由于此查询中存在非法字符，导致异常 "java.net.URISyntaxException: Illegal character in query at index 126: http://.../get-by-query?query=name=="Casa Lucio Dalla"&page=0&size=100
at java.base/java.net.URI$Parser.fail(URI.java:2913)
at java.base/java.net.URI$Parser.checkChars(URI.java:3084)
at java.base/java.net.URI$Parser.parseHierarchical(URI.java:3172)
...
请注意，如果我使用没有空格的查询，例如将 "Casa" 替换为 "Casa Lucio Dalla"，则可以正常工作。
编辑2
如果我使用 URL += "query=" + URLEncoder.encode(query, StandardCharsets.UTF_8) + "&page=" + page + "&size=" + size;，会出现 500 内部服务器错误。
英文:
I have
public List<Attraction> retrieveByQuery(String query, int page, int size) throws IOException, InterruptedException {
String URL = "http://mydomain/get-by-query?";
URL += "query=" + query + "&page=" + page + "&size=" + size;
HttpClient httpClient = HttpClient.newHttpClient();
HttpRequest httpRequest = HttpRequest
.newBuilder()
.GET()
.header("accept", "application/json")
.uri(URI.create(URL)) // thows URISyntaxException
.build();
HttpResponse<String> httpResponses = httpClient.send(httpRequest, HttpResponse.BodyHandlers.ofString());
return null;
}
- This is giving me
> URISyntaxException
how can I fix? I think the problem is with "" (double quotes).
EDIT
This is the full stack strace with exceptions and details:
Exception in thread "JavaFX Application Thread"
java.lang.IllegalArgumentException: Illegal character in query at index 126: http://.../get-by-query?query=name=="Casa Lucio Dalla"&page=0&size=100
at java.base/java.net.URI.create(URI.java:883)
at dao_implementations.AttractionDAO_MongoDB.retrieveByQuery(AttractionDAO_MongoDB.java:119)
at controllers.CrudAttractionController.doRetrieveByQuery(CrudAttractionController.java:505)
at controllers.CrudAttractionController.lambda$buttonConfermaClicked$9(CrudAttractionController.java:451)
at javafx.base/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at javafx.base/com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at javafx.base/com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.base/javafx.event.Event.fireEvent(Event.java:198)
at javafx.graphics/javafx.scene.Node.fireEvent(Node.java:8879)
at javafx.controls/javafx.scene.control.Button.fire(Button.java:200)
at javafx.controls/com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:206)
at javafx.controls/com.sun.javafx.scene.control.inputmap.InputMap.handle(InputMap.java:274)
at javafx.base/com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at javafx.base/com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at javafx.base/com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at javafx.base/com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at javafx.base/com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at javafx.base/com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at javafx.base/com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.base/javafx.event.Event.fireEvent(Event.java:198)
at javafx.graphics/javafx.scene.Scene$MouseHandler.process(Scene.java:3851)
at javafx.graphics/javafx.scene.Scene$MouseHandler.access$1200(Scene.java:3579)
at javafx.graphics/javafx.scene.Scene.processMouseEvent(Scene.java:1849)
at javafx.graphics/javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2588)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:397)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$2(GlassViewEventHandler.java:434)
at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:390)
at javafx.graphics/com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:433)
at javafx.graphics/com.sun.glass.ui.View.handleMouseEvent(View.java:556)
at javafx.graphics/com.sun.glass.ui.View.notifyMouse(View.java:942)
at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:277)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.net.URISyntaxException: Illegal character in query at index 126: http://Troppadvisorserver-env.eba-pfsmp3kx.us-east-1.elasticbeanstalk.com/attraction/search-by-rsql-no-point?query=name=='Casa Lucio Dalla';certificateOfExcellence==false&page=0&size=100
at java.base/java.net.URI$Parser.fail(URI.java:2913)
at java.base/java.net.URI$Parser.checkChars(URI.java:3084)
at java.base/java.net.URI$Parser.parseHierarchical(URI.java:3172)
at java.base/java.net.URI$Parser.parse(URI.java:3114)
at java.base/java.net.URI.<init>(URI.java:600)
at java.base/java.net.URI.create(URI.java:881)
... 49 more
followed by:
Caused by: java.net.URISyntaxException: Illegal character in query at index 126: http://.../get-by-query?query=name=="Casa Lucio Dalla"&page=0&size=100
Note that if I use a query with no spaces, for example Casa instead of Casa Lucio Dalla it works perfectly.
EDIT2
If I use URL += "query=" + URLEncoder.encode(query, StandardCharsets.UTF_8) + "&page=" + page + "&size=" + size;, it gives me Error 500 internal server error
答案1
得分: 2
你需要对URL的query部分进行URL编码。
如果URL中包含"字符，则必须以%22的形式表示。
以下是一些代码：
import java.net.URLEncoder;
...
URL += "query=" + URLEncoder.encode(query, StandardCharsets.UTF_8) + "&page=" + page + "&size=" + size;
// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
更新：
> 如果我使用_[上面的建议]_，会出现500内部服务器错误
这意味着URL被正确创建，并且请求已经达到服务器。如果你无法解决这个问题，请发布一个新的问题，附上服务器端的错误信息。
英文:
You need to URL encode the query part of the URL.
If the URL should contain a " character, it must be in the form of %22.
Here's some code:
import java.net.URLEncoder;
...
URL += "query=" + URLEncoder.encode(query, StandardCharsets.UTF_8) + "&page=" + page + "&size=" + size;
// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Update:
> If I use [the above suggestion], it gives me Error 500 internal server error
This means that the URL in created properly, and that the request reaches the server. Please post a new question with the server side error if you can't figure that out.
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论