文件上传

代码如下

package com.ming;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import org.apache.commons.fileupload.FileUpload;
import org.apache.commons.io.FileUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.struts2.ServletActionContext;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;
import java.util.Map;

public class uploadFile extends ActionSupport {
    private File myFile;
    private String myFileContentType;
    private String myFileFileName;
    private String destPath;

    @Override
    public String execute()
    {
        Logger logger = LogManager.getLogger();
        // 获取到Action执行的上下文
        destPath = ServletActionContext.getServletContext().getRealPath("/");
        // 拼接目录
        destPath = destPath + "upload/";
        // 新建文件
        File tmpFile = new File(destPath, new Date().toString() + this.myFileFileName);
        try{
            FileUtils.copyFile(myFile, tmpFile);
        }catch (Exception e){
            logger.info(e);
        }
        logger.info(myFileContentType);
        return SUCCESS;
    }
    public File getMyFile() {
        return myFile;
    }
    public void setMyFile(File myFile) {
        this.myFile = myFile;
    }
    public String getMyFileContentType() {
        return myFileContentType;
    }
    public void setMyFileContentType(String myFileContentType) {
        this.myFileContentType = myFileContentType;
    }
    public String getMyFileFileName() {
        return myFileFileName;
    }
    public void setMyFileFileName(String myFileFileName) {
        this.myFileFileName = myFileFileName;
    }
}

核心思路 是 获取到当前action上下文件,接着获取容器上下文,在进行绝对路径拼接,拼接完成以后,新建file文件,然后,文件内容写入即可.

配置文件

    
    
    
    
        
            
            
                image/jpeg,image/gif
            
            /success.jsp
            /error.jsp