Struts2中stream流的应用

文件的上传的上传和下载在hibernate中可以使用stream流的方式来返回

具体如下

配置struts.xml的配置文件

<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
        "http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
    <package name="user_1" namespace="/" extends="struts-default">
        <action name="demo4" class="StreamAction">
            <result name="success" type="stream">
                <param name="inputStream">inputStream</param>
            </result>
        </action>
    </package>
</struts>

在Action类中需要有与配置文件相对的inputStream对象

public class StreamAction extends ActionSupport{
    private InputStream inputStream;

    @Override
    public String execute() throws Exception {
        JSONObject json = new JSONObject();
        json.put("naneme","123");
        json.put("age",12333);
        String str = json.toString();
        inputStream = new ByteArrayInputStream(str.getBytes("GBK"));
        return super.execute();
    }

    public InputStream getInputStream() {
        return inputStream;
    }

    public void setInputStream(InputStream inputStream) {
        this.inputStream = inputStream;
    }

这样既可以将想要输出的字符串等以Stream流的方式返回