CODEWITHSUNDEEP
javahttpservletsjakarta-eerequest
jacky
jacky

Reputation: 679

request.setcharacterencoding() method seems do nothing in the source code

In a servlet java class,I type request.setCharacterEncoding("utf-8"), and then I want to see what this method actually is in the source code,and I use CTRL+LEFT-CLICK to enter the method's source code
And then it goes to the ServletRequest Interface, in the Interface the method's code is

public void setCharacterEncoding(String env)
    throws java.io.UnsupportedEncodingException;

It's surely an empty method because ServletRequest is an Interface.

Where can I see what this method actually have done to set the encoding?

Upvotes: 0

Views: 325

Answers (1)

Alexander Yanyshin
Alexander Yanyshin

Reputation: 1370

This method is implemented by servlet container. For example for Tomcat 8.5 implementation reside in org.apache.catalina.connector.Request#setCharacterEncoding and looks like:

public void setCharacterEncoding(String enc) throws UnsupportedEncodingException {
        if(!this.usingReader) {
            B2CConverter.getCharset(enc);
            this.coyoteRequest.setCharacterEncoding(enc);
        }
    }

As you can see it is just validates encoding name and set internal request implementation field in which encoding stored. You can search you servlet container source code for implements HttpServletRequest and look at implementation.

Upvotes: 2

Related Questions