如何在groovy中创建补丁http请求

Question

为什么不行?

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}");

返回错误=java.net.ProtocolException: Invalid HTTP method: PATCH

Answer 1

旧的java HttpUrlConnection.setRequestMethod()不支持补丁方法:

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

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中你可以设置受保护的属性值，并且有一个属性method

https://docs.oracle.com/javase/10/docs/api/java/net/HttpURLConnection.html方法所以你可以修改代码:

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")