有些时候我们只想做个简单的ajax测试，但是又不想写serverlet就用struts2，这时候就需要返回一个简单的response就可以了。

package actions;

import java.io.InputStream;
import java.io.StringBufferInputStream;

import com.opensymphony.xwork2.ActionSupport;

public class TextResultAction extends ActionSupport {
    privateInputStream inputStream;

    publicInputStream getInputStream() {
       return inputStream;
    }

    publicvoid setInputStream(InputStream inputStream) {
       this.inputStream = inputStream;
    }

    publicString execute() throws Exception {
       inputStream = new StringBufferInputStream(
               "Hello World! This is a text string response from a Struts 2Action.");
       return SUCCESS;
    }
}

struts中的配置

<action name="text-result" class="actions.TextResultAction">
  <result type="stream">
    <param name="contentType">text/html</param>
    <param name="inputName">inputStream</param>
  </result>
</action>