Description: Pay.java is the test entry
WeixinApiResultImpl.java returns the result of the parsing request and has the method of converting the paid link URL to a two-dimensional code picture stream.
WeixinPayApiImpl.java for pre - request operations (parameter encapsulation)
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File list (Check if you may need any files):
Pay.java
WeixinApiResultImpl.java
WeixinPayApiImpl.java
说明.txt
HttpClientUtil.java
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