Question

我有一个Spring restful web服务，它与邮递员（chrome中的插件）配合使用URL（http://localhost:8080/Assignment/rest/words/ {name} / protection），需要1个名为“name”的参数

我也用java编写的httpclient。使用以下代码。

HttpClient client = new HttpClient();

PostMethod method = new PostMethod("http://localhost:8080/Assignment/rest/words/{name}/protection");
method.setParameter("name", "value");

    byte[] responseBody = null;
    int statusCode = 0;
    try {
        // Executing method.
        statusCode = client.executeMethod(method);
        }catch(Exception e){}
        // checking status code
        if (statusCode != HttpStatus.SC_OK) {
            System.err.println("Method failed: " + method.getStatusLine());
        }

        // Reading response body.
        responseBody = method.getResponseBody();

在statusCode = client.executeMethod(method);上显示错误如下

java.lang.IllegalArgumentException: Invalid uri 'http://localhost:8080/Assignment/rest/words/{name}/protection': escaped absolute path not valid    org.apache.commons.httpclient.HttpMethodBase.<init>(HttpMethodBase.java:222)    org.apache.commons.httpclient.methods.ExpectContinueMethod.<init>(ExpectContinueMethod.java:93)     org.apache.commons.httpclient.methods.EntityEnclosingMethod.<init>(EntityEnclosingMethod.java:119)  org.apache.commons.httpclient.methods.PostMethod.<init>(PostMethod.java:106)    com.aspose.talib.service.WordService.getDataFromURL(WordService.java:50)    com.aspose.talib.service.WordService.postRequestForProtectData(WordService.java:37)     com.aspose.talib.web.WordController.init(WordController.java:21)    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)   sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)   java.lang.reflect.Method.invoke(Method.java:606)    javax.el.BeanELResolver.invoke(BeanELResolver.java:183)     javax.el.CompositeELResolver.invoke(CompositeELResolver.java:161)   org.apache.el.parser.AstValue.getValue(AstValue.java:173)   org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)    com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)  javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)  javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)  javax.faces.component.UIOutput.getValue(UIOutput.java:174)  com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:205)     com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:355)    com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:164)  javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:920)   javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)  javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)  javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)  com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:458)     com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:134)   com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)   com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)   com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)    javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)  org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

请帮忙

Answer 1

显然，URI中不允许使用大括号等字符。你必须对那部分进行编码。

尝试这样的事情：

PostMethod method = new PostMethod(URIUtil.encodePath("http://localhost:8080/Assignment/rest/words/{name}/protection", "UTF-8"));
method.setParameter("name", "value");

URIUtil来自commons-httpclient-3.1。

    <dependency>
        <groupId>commons-httpclient</groupId>
        <artifactId>commons-httpclient</artifactId>
        <version>3.1</version>
    </dependency>

Answer 2

最好先使用URLBuilder，然后将构建的URL分配给contructor参数：

URIBuilder uriBuilder = new URIBuilder（）;

java.lang.IllegalArgumentException：无效的uri'/ Assignment / rest / words / {name} / protection'：转义的绝对路径无效

2 个答案: