Android应用源码在线词典源码.zip项目安卓应用源码下载

package com.ostrichmyself.api.util; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; /** * 普通的文本文件读取与写入操作 * 注意,面向字符的, 用Reader/Writer, 面向字节的, InputStream/OutputStream * 面向字符会产生乱码问题, 此时需要采用 InputStreamReader去改写字符 * 为了不造成问题的复杂, 这里不做研究, 采用系统默认编码[GB2312], 仅仅写了一个处理乱码的函数 * getStringFromFile(String filePath, String code) * @author Galaxy Team * */ public class FileProcesser { /** * 文件保存为String * 读取的是字符, 不是字节 * 采用默认编码 * @param filePath * @return */ public static String getStringFromFile(String filePath) { try { StringBuffer sBuffer = new StringBuffer(); BufferedReader in = new BufferedReader(new FileReader(filePath)); if(!new File(filePath).exists()) { return null; } while (in.ready()) { sBuffer.append(in.readLine() + "\r\n"); } in.close(); return sBuffer.toString(); } catch (Exception e) { System.out.println("不存在制定的文件" + filePath); } return null; } /** * 文件保存为String * 读取的是字符, 不是字节 * code 的取值不区分大小写 * GBK, GB2312, UTF8/UTF-8, UTF-16/UTF16, utf-16be等 * @param filePath * @param code 编码方式 * @return */ public static String getStringFromFile(String filePath, String code) { try { StringBuffer sBuffer = new StringBuffer(); FileInputStream fInputStream = new FileInputStream(filePath); InputStreamReader inputStreamReader = new InputStreamReader(fInputStream, code); BufferedReader in = new BufferedReader(inputStreamReader); if(!new File(filePath).exists()) { return null; } while (in.ready()) { sBuffer.append(in.readLine() + "\r\n"); } in.close(); return sBuffer.toString(); } catch (Exception e) { e.printStackTrace(); } return null; } /** * 从文件中取二进制字节数组 * @param filePath * @return */ public static byte[] getByteFromFile(String filePath) { FileInputStream fileInputStream = null; byte[] data = null; BufferedInputStream bf = null; try { fileInputStream = new FileInputStream(filePath); bf = new BufferedInputStream(fileInputStream); data = new byte[bf.available()]; bf.read(data); return data; } catch(Exception e) { e.printStackTrace(); } finally { try { fileInputStream.close(); bf.close(); } catch (IOException e) { e.printStackTrace(); } } return null; } /** * 保存文本文件 * 写入的是字符, 不是字节 * @param filePath * @param content */ public static void setStringContentToFile(String filePath, String content) { try { File file = new File(filePath); file.createNewFile(); FileOutputStream fo = new FileOutputStream(filePath); PrintWriter pw = new PrintWriter(new File(filePath)); pw.write(content); fo.close(); pw.close(); } catch (Exception e) { e.printStackTrace(); } } /** * * @param filePath * @param content */ public static void setBytesContentToFile(String filePath, byte[] content) { FileOutputStream fileOutputStream = null; BufferedOutputStream bf = null; try { File file = new File(filePath); file.createNewFile(); fileOutputStream = new FileOutputStream(filePath); bf = new BufferedOutputStream(fileOutputStream); fileOutputStream.write(content); } catch(Exception e) { e.printStackTrace(); } finally { try { fileOutputStream.close(); bf.close(); } catch (IOException e) { e.printStackTrace(); } } } public static void main(String[] args) { //res/IniFileProcessor.java采用的是UTF-8 System.out.println(getStringFromFile("res/IniFileProcessor.java").trim()); System.out.println(getStringFromFile("res/IniFileProcessor.java", "UTF-8").trim()); } }