maybe we hava a method without args
so it make a npe like below
```
Exception in thread "Dubbo-proxy-request-worker-pool-thread-3" java.lang.NullPointerException
        at org.apache.dubbo.proxy.worker.RequestWorker.run(RequestWorker.java:65)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:748)
```
1 file changed
tree: 69bfeae4e5b17abc85433f5f3914242d747c3907
  1. .gitignore
  2. README.md
  3. README_zh.md
  4. mvnw
  5. mvnw.cmd
  6. pom.xml
  7. src/
README.md

中文版本

Dubbo Proxy

Dubbo Proxy, a gateway of Dubbo, switch from HTTP request to Dubbo protocol,then invoke Dubbo service and return to the result. Later Dubbo Proxy would combine several features, including circuit breaker, current-limiting, api management.

instructions

HTTP request format:

{application Name}/​{Interface name}?version={version}&group={group}

Group and version is the mapping data in Dubbo service.

http POST body:

{
    "methodName" : "sayHello",
    "paramTypes" : ["org.apache.dubbo.demo.model.User"],
    "paramValues": [
        {
            "id": 23,
            "username": "testUser"
        }
    ]
}
  • In the Dubbo 2.7 version and later updates versions, paramTypes is optional data, if not filled in, Dubbo Proxy would get related mapping data from metadata center.
  • You can set registry address and metadata center address in application.yml
proxy.registry.address: zookeeper://127.0.0.1:2181   #registry center address, same as Dubbo service's 
proxy.metadata-report.address: zookeeper://127.0.0.1:2181  #metadata center address, used by paramType search, support for dubbo 2.7 or later