ssh框架实现文件上传下载实例代码

2024-02-27 17:12:07 157

packagecom.cpsec.tang.chemical.action; importjava.io.BufferedReader; importjava.io.BufferedWriter; importjava.io.File; importjava.io.FileInputStream; importjava.io.FileOutputStream; importjava.io.IOException; importjava.io.InputStream; importjava.io.InputStreamReader; importjava.io.OutputStreamWriter; importorg.apache.commons.io.FileUtils; importorg.apache.struts2.ServletActionContext; importorg.springframework.stereotype.Controller; importcom.opensymphony.xwork2.ActionSupport; @Controller("newFileAction") publicclassNewFileActionextendsActionSupport{ privateFilefile;//文件 privateStringfileFileName;//文件名称 privateStringfileContentType;//文件类型 privateStringfilename; privateInputStreaminputStream; publicStringnewFile(){ Filedir=newFile(ServletActionContext.getServletContext().getRealPath("files")); //判断文件是否上传，如果上传的话将会创建该目录 if(!dir.exists()){ dir.mkdir();//创建该目录 } System.out.println(file); System.out.println(fileFileName); //第一种文件上传的方法 //声明文件输入流，为输入流指定文件路径 //获取输出流，获取文件的文件地址及名称 FileInputStreamin=null; FileOutputStreamout=null; try{ in=newFileInputStream(file); out=newFileOutputStream(dir+"\\"+fileFileName); byte[]b=newbyte[1024*1024];//每次写入的大小 inti=0; while((i=in.read(b))>0){ out.write(b,0,i); } in.close(); out.close(); }catch(Exceptione){ e.printStackTrace(); }finally{ } /*//第二种文件上传的方法 try{ FileUtils.copyFile(file,newFile(dir,fileFileName)); }catch(IOExceptione){ e.printStackTrace(); } //第三种方法 BufferedReaderbReader=null; BufferedWriterbWriter=null; try{ bReader=newBufferedReader(newInputStreamReader(newFileInputStream(file))); bWriter=newBufferedWriter(newOutputStreamWriter(newFileOutputStream(dir+"\\"+fileFileName))); char[]str=newchar[1024*1024]; inti=0; while((i=bReader.read(str))>0){ bWriter.write(str,0,i); } bReader.close(); bWriter.close(); dir.delete(); }catch(Exceptione){ e.printStackTrace(); }finally{ }*/ returnSUCCESS; } publicStringdownFile(){ System.out.println(filename); inputStream=ServletActionContext.getServletContext().getResourceAsStream("/files/"+filename); System.out.println(inputStream); returnSUCCESS; } publicFilegetFile(){ returnfile; } publicvoidsetFile(Filefile){ this.file=file; } publicStringgetFileFileName(){ returnfileFileName; } publicvoidsetFileFileName(StringfileFileName){ this.fileFileName=fileFileName; } publicStringgetFileContentType(){ returnfileContentType; } publicvoidsetFileContentType(StringfileContentType){ this.fileContentType=fileContentType; } publicStringgetFilename(){ returnfilename; } publicvoidsetFilename(Stringfilename){ this.filename=filename; } publicInputStreamgetInputStream(){ returninputStream; } publicvoidsetInputStream(InputStreaminputStream){ this.inputStream=inputStream; } }

ssh框架实现文件上传下载实例代码

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