struts2文件下载示例

 

package com.topdt.policesms.action;

 

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.InputStream;

 

import org.apache.struts2.convention.annotation.Action;

import org.apache.struts2.convention.annotation.InterceptorRef;

import org.apache.struts2.convention.annotation.Namespace;

import org.apache.struts2.convention.annotation.ParentPackage;

import org.apache.struts2.convention.annotation.Result;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.context.annotation.Scope;

import org.springframework.stereotype.Controller;

 

import com.topdt.frame.base.Struts2Action;

import com.topdt.frame.common.AppContext;

import com.topdt.policesms.model.DataLog;

import com.topdt.policesms.service.DataLogService;

 

/**

 * 数据日志

 * @author Administrator

 *

 */

@Controller

@Scope("prototype")

@ParentPackage(value = "gloab-package")

@Namespace(value = "/message")

@Action(value = "dlog", results = {

@Result(name = "list", location = "/message/dlog/dlog_list.jsp"),

@Result(name = "download", type = "stream(类型为流)", params = { "contentType",

"application（应用程序）/octet-stream;charset=ISO8859-1", "inputName(输入文件名称)",

"fstream", "contentDisposition", "attachment;filename=${downloadFileName}",

"bufferSize", "4096" }),

@Result(name = "invalid.token",type="redirect",location = "task!list.action",params = {"message", "请不要重复提交" }) 

}, 

interceptorRefs = {

@InterceptorRef(value = "pageInterceptor", params = { "includeMethods", "list" }),

@InterceptorRef(value = "token", params = { "includeMethods", "save" }),

@InterceptorRef("topDtStack") 

})

public class DataLogAction extends Struts2Action<DataLog>{

 

private static final long serialVersionUID = 1792436660779570837L;

 

@Autowired

private DataLogService dataLogService;

private String statDate;

private String endDate;

private InputStream fstream;

private String inputPath;

private String fileName;

    public void setInputPath(String value) {

        inputPath = value;

    }

 

    public void setFileName(String fileName) {

this.fileName = fileName;

}

 

@Override

protected void doList() throws Exception {

list = dataLogService.queryDataLog(statDate, endDate, getModel().getDataType());

}

 

//取得文件名称

 

public String getDownloadFileName(){

    String downFileName=fileName;

    try {

downFileName=new String(downFileName.getBytes(),"ISO8859-1");

} catch (Exception e) {

e.printStackTrace();

}

return downFileName;

    }

//下载文件

public String downLog () {

inputPath = AppContext.getProperties("breakDataDir")+fileName;

try {

fstream = new FileInputStream(new File(inputPath));

} catch (FileNotFoundException e) {

e.printStackTrace();

}

return "download";

}

public DataLogService getDataLogService() {

return dataLogService;

}

 

public void setDataLogService(DataLogService dataLogService) {

this.dataLogService = dataLogService;

}

 

public String getStatDate() {

return statDate;

}

 

public void setStatDate(String statDate) {

this.statDate = statDate;

}

 

public String getEndDate() {

return endDate;

}

 

public void setEndDate(String endDate) {

this.endDate = endDate;

}

 

public InputStream getFstream() {

return fstream;

}

 

public void setFstream(InputStream fstream) {

this.fstream = fstream;

}

 

}

 

 

HTML ：代码：<a href='dlog!downLog.action?fileName=<s:property value="#dlog.errorDetail"/>'>错误详细</a>