如何在groovy中提出补丁超文本传输协议请求

Question

为什么它不起作用？

def post = new URL(url).openConnection();
    post.setRequestMethod("PATCH");
    post.setDoOutput(true);
    post.setRequestProperty("Content-Type", "application/json");
    post.getOutputStream().write(body.getBytes("UTF-8"));
    def postRC = post.getResponseCode();
    logger.info("Status code = ${postRC}");

返回java.net中的错误=。ProtocolException:无效的HTTP方法：修补程序

Answer 1

旧的java HttpUrlConnection。setRequestMethod（）不支持修补程序方法：

https://docs.oracle.com/javase/10/docs/api/java/net/HttpURLConnection.html#setRequestMethod（java.lang.String）

public void setRequestMethod​(String method) throws ProtocolException

Set the method for the URL request, one of:
    GET
    POST
    HEAD
    OPTIONS
    PUT
    DELETE
    TRACE 

但是有一个技巧-在groovy中，您可以设置受保护的属性值，并且有一个属性方法

https://docs.oracle.com/javase/10/docs/api/java/net/HttpURLConnection.html#method

所以你可以改变代码：

def body = [test:123]
def post = new URL("http://httpbin.org/patch").openConnection();
post.method ="PATCH";
post.setDoOutput(true);
post.setRequestProperty("Content-Type", "application/json");
post.getOutputStream().withWriter("UTF-8"){ it << new groovy.json.JsonBuilder(body) }
def postRC = post.getResponseCode();
println "Status code = ${postRC}"
println post.getInputStream().getText("UTF-8")