struts2 下载文件

1)DownloadAction

public class DownloadAction {

	private String inputPath;

	public void setInputPath(String inputPath) {
		this.inputPath = inputPath;
	}

	public InputStream getTargetFile() {
		return ServletActionContext.getServletContext().getResourceAsStream(inputPath);
	}
	
	public String execute() throws Exception {
		return "success";
	}
}

2)配置Action

<action name="download" class="net.csdn.struts.action.DownloadAction">
	<param name="inputPath">/tmp/some.doc</param>
	<result type="stream">
		<!-- 文件类型 -->
		<param name="contentType">application/msword</param>
		<!-- Action中的InputStream -->
		<param name="inputName">targetFile</param>
		<!-- 设置文件名 -->
		<param name="contentDisposition">filename="中文.doc"</param>
		<!-- 缓存大小 -->
		<param name="bufferSize">4096</param>
	</result>
</action>