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api - 得到响应后得到 400，尽管 url 格式正确

问题描述

执行获取 url 如下

resp, err := http.Get(path)

事先，我打印path或多或少像这样的变量

http://localhost:8080/api/history/resources/count?startedAfter="2021-03-06T15%3A27%3A13.894415787%2B0200"

当我单击该链接时，它会返回200并返回有效json响应。

但是代码本身失败并打印：

<!doctype html><html lang="en"><head><title>HTTP Status 400 – Bad Request</title>Invalid character found in the request target [&#47;api&#47;history&#47;resources&#47;count?startedAfter=&quot;2021-03-06T15%3A27%3A13.894415787%2B0200&quot;]. The valid characters are defined in RFC 7230 and RFC 3986</p><p><b>Description</b> The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing).</p><p><b>Exception</b></p><pre>java.lang.IllegalArgumentException: Invalid character found in the request target [&#47;apit&#47;history&#47;resources&#47;count?startedAfter=&quot;2021-03-06T15%3A27%3A13.894415787%2B0200&quot;]. The valid characters are defined in RFC 7230 and RFC 3986
        org.apache.coyote.http11.Http11InputBuffer.parseRequestLine(Http11InputBuffer.java:491)
        org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:260)
        org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
        org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
        org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
        org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
        java.base&#47;java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        java.base&#47;java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        java.base&#47;java.lang.Thread.run(Thread.java:834)
</pre><p><b>Note</b> The full stack trace of the root cause is available in the server logs.</p><hr class="line" /><h3>Apache Tomcat/9.0.36</h3></body></html>

这是为什么？

标签： apirestgotomcat

解决方案

查询参数中的引号似乎导致服务器出现错误。尝试这样的事情

apiURL := "http://localhost:8080/api/history/resources/count"
req, err := http.NewRequest("GET", apiURL, nil)
if err != nil {
    log.Fatal(err)
}

apiParams := req.URL.Query()
apiParams.Add("startedAfter", "2021-03-06T15:27:13.894415787+0200")
req.URL.RawQuery = apiParams.Encode()

res, err := http.DefaultClient.Do(req)

尝试并恢复。

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