Java，

Java，

一、IO方面：

1.文件上传-用Spring方法

public void uploadFile3(MultipartHttpServletRequest multipartRequest, String xml) throws IOException {
		MultipartFile xmlFile = multipartRequest.getFile("xmlFile");
		
		InputStreamReader reader = new InputStreamReader(xmlFile.getInputStream());
		BufferedReader br = new BufferedReader(reader);
		StringBuilder sb = new StringBuilder();
		while (br.ready()) {
			sb.append(br1.readLine().trim());// 每次循环用readLine()读取下一行
		}
    }

注意：前端JSP的form表单要加这个属性和值，<form enctype="multipart/form-data">，让Spring知道这是一个文件上传的表单。

 

2.用IO流读取文件

public void uploadFile3(String xml) throws IOException {
		String pathname = "C:\\Software\\SFA_TEST_pic\\surveyImageDetail.xml";
		File xmlFile = new File(pathname);
		InputStreamReader reader = new InputStreamReader(new FileInputStream(xmlFile)); // 建立一个输入流对象reader
		BufferedReader br = new BufferedReader(reader); // 建立一个对象，它把文件内容转成计算机能读懂的语言
		StringBuilder sb = new StringBuilder();
		while (br.ready()) {
			sb.append(br.readLine().trim());// 每次循环用readLine()读取下一行
		}
    }