好多段代码

许多段代码

?

1、项目地址与类的包名路径

String pro = System.getProperty("user.dir");String pkg = CgSpringMvcIbatis.class.getPackage().getName().replaceAll("\\.","\\\"); 

?

2、根据模板生成文件（用时需修改）

Template tJsp = cfg.getTemplate("js.ftl");// 模板名称tJsp.setEncoding("UTF-8");String jspDir = jMap.get("conpath").toString();File fileDir = new File(jspDir);org.apache.commons.io.FileUtils.forceMkdir(fileDir);File output_service = new File(jspDir + "/default.js");Writer writer_service = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(output_service), "UTF-8"));tJsp.process(jMap, writer_service);writer_service.close();

?

3、泛型接口Ibatis

/** * Ibatis Dao 接口 * 通用增删改查\带分页\单条 * @author mywhile * @param <T> */public abstract interface IbatisDao<T> {public void delete(String guid, String sqlMapId);public void save(T bean, String sqlMapId);public void update(T bean, String sqlMapId);public List<T> query(String sqlMapId);public T queryRowByGuid(String guid, String sqlMapId);public List<T> queryPageData(String sqlMapId, Map map, int pageNo, int pageSize);public int queryCountRow(Map map, String SqlMapId);}

?

4、泛型接口实现Ibatis

import java.util.List;import java.util.Map;import org.springframework.orm.ibatis.support.SqlMapClientDaoSupport;import sdcncsi.ibatis.test.dao.IbatisDao;@SuppressWarnings("unchecked")public class IbatisServicesImpl<T>extends SqlMapClientDaoSupport implements IbatisDao<T> {@Overridepublic void delete(String guid, String sqlMapId) {getSqlMapClientTemplate().delete(sqlMapId, guid);}@Overridepublic List<T> query(String sqlMapId) {return getSqlMapClientTemplate().queryForList(sqlMapId);}@Overridepublic T queryRowByGuid(String guid, String sqlMapId) {return (T) getSqlMapClientTemplate().queryForObject(sqlMapId, guid);}@Overridepublic void save(T bean, String sqlMapId) {getSqlMapClientTemplate().insert(sqlMapId, bean);}@Overridepublic void update(T bean, String sqlMapId) {getSqlMapClientTemplate().update(sqlMapId, bean);}@Overridepublic List<T> queryPageData(String sqlMapId, Map map, int pageNo, int pageSize) {map.put("pageNo", pageNo == 1 ? 0 : pageSize);map.put("pageSize", pageSize);return getSqlMapClientTemplate().queryForList(sqlMapId, map);//, pageNo, pageSize}@Overridepublic int queryCountRow(Map map, String sqlMapId) {return (Integer) getSqlMapClientTemplate().queryForObject(sqlMapId, map);}}

?

5、Ibatis中取SQL

String sql = null;SqlMapClientImpl sqlmap = (SqlMapClientImpl)this.getSqlMapClient();   MappedStatement stmt = sqlmap.getMappedStatement(sqlMapId);   Sql stmtSql = stmt.getSql();   SessionScope session = new SessionScope();StatementScope scope = new StatementScope(session);scope.setStatement(stmt);   sql = stmtSql.getSql(scope, map);

?6、附件＝Spring+Ibatis代码生成器；

7、文件读取

/** * 以字节为单位读取文件，常用于读二进制文件，如图片、声音、影像等文件。 * @param fileName 文件的名 */public static void readFileByBytes(String fileName) {File file = new File(fileName);InputStream in = null;try {System.out.println("以字节为单位读取文件内容，一次读一个字节：");// 一次读一个字节in = new FileInputStream(file);int tempbyte;while ((tempbyte = in.read()) != -1) {System.out.write(tempbyte);}in.close();} catch (IOException e) {e.printStackTrace();return;}try {System.out.println("以字节为单位读取文件内容，一次读多个字节：");// 一次读多个字节byte[] tempbytes = new byte[100];int byteread = 0;in = new FileInputStream(fileName);FileReadWrite.showAvailableBytes(in);// 读入多个字节到字节数组中，byteread为一次读入的字节数while ((byteread = in.read(tempbytes)) != -1) {System.out.write(tempbytes, 0, byteread);}} catch (Exception e1) {e1.printStackTrace();} finally {if (in != null) {try {in.close();} catch (IOException e1) {}}}}/** * 以字符为单位读取文件，常用于读文本，数字等类型的文件 * @param fileName 文件名 */public static void readFileByChars(String fileName) {File file = new File(fileName);Reader reader = null;try {System.out.println("以字符为单位读取文件内容，一次读一个字节：");// 一次读一个字符reader = new InputStreamReader(new FileInputStream(file));int tempchar;while ((tempchar = reader.read()) != -1) {// 对于windows下，rn这两个字符在一起时，表示一个换行。// 但如果这两个字符分开显示时，会换两次行。// 因此，屏蔽掉r，或者屏蔽n。否则，将会多出很多空行。if (((char) tempchar) != 'r') {System.out.print((char) tempchar);}}reader.close();} catch (Exception e) {e.printStackTrace();}try {System.out.println("以字符为单位读取文件内容，一次读多个字节：");// 一次读多个字符char[] tempchars = new char[30];int charread = 0;reader = new InputStreamReader(new FileInputStream(fileName));// 读入多个字符到字符数组中，charread为一次读取字符数while ((charread = reader.read(tempchars)) != -1) {// 同样屏蔽掉r不显示if ((charread == tempchars.length)&& (tempchars[tempchars.length - 1] != 'r')) {System.out.print(tempchars);} else {for (int i = 0; i < charread; i++) {if (tempchars[i] == 'r') {continue;} else {System.out.print(tempchars[i]);}}}}} catch (Exception e1) {e1.printStackTrace();} finally {if (reader != null) {try {reader.close();} catch (IOException e1) {}}}}/** * 以行为单位读取文件，常用于读面向行的格式化文件 * @param fileName 文件名 */public static void readFileByLines(String fileName) {File file = new File(fileName);BufferedReader reader = null;try {System.out.println("以行为单位读取文件内容，一次读一整行：");reader = new BufferedReader(new FileReader(file));String tempString = null;int line = 1;// 一次读入一行，直到读入null为文件结束while ((tempString = reader.readLine()) != null) {// 显示行号System.out.println("line " + line + ": " + tempString);line++;}reader.close();} catch (IOException e) {e.printStackTrace();} finally {if (reader != null) {try {reader.close();} catch (IOException e1) {}}}}/** * 随机读取文件内容 * @param fileName 文件名 */public static void readFileByRandomAccess(String fileName) {RandomAccessFile randomFile = null;try {System.out.println("随机读取一段文件内容：");// 打开一个随机访问文件流，按只读方式randomFile = new RandomAccessFile(fileName, "r");// 文件长度，字节数long fileLength = randomFile.length();// 读文件的起始位置int beginIndex = (fileLength > 4) ? 4 : 0;// 将读文件的开始位置移到beginIndex位置。randomFile.seek(beginIndex);byte[] bytes = new byte[10];int byteread = 0;// 一次读10个字节，如果文件内容不足10个字节，则读剩下的字节。// 将一次读取的字节数赋给bytereadwhile ((byteread = randomFile.read(bytes)) != -1) {System.out.write(bytes, 0, byteread);}} catch (IOException e) {e.printStackTrace();} finally {if (randomFile != null) {try {randomFile.close();} catch (IOException e1) {}}}}/** * 显示输入流中还剩的字节数 * @param in */private static void showAvailableBytes(InputStream in) {try {System.out.println("当前字节输入流中的字节数为:" + in.available());} catch (IOException e) {e.printStackTrace();}}/** * 将内容追加到文件尾部 * A方法追加文件：使用RandomAccessFile * @param fileName文件名 * @param content 追加的内容 */public static void appendMethodA(String fileName, String content) {try {// 打开一个随机访问文件流，按读写方式RandomAccessFile randomFile = new RandomAccessFile(fileName, "rw");// 文件长度，字节数long fileLength = randomFile.length();// 将写文件指针移到文件尾。randomFile.seek(fileLength);randomFile.writeBytes(content);randomFile.close();} catch (IOException e) {e.printStackTrace();}}/** * 将内容追加到文件尾部 * B方法追加文件：使用FileWriter * @param fileName * @param content */public static void appendMethodB(String fileName, String content) {try {// 打开一个写文件器，构造函数中的第二个参数true表示以追加形式写文件FileWriter writer = new FileWriter(fileName, true);writer.write(content);writer.close();} catch (IOException e) {e.printStackTrace();}}

?

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;public class MyEclipseGEN {private static final String LL = "Decompiling this copyrighted software is a violation of both your license agreement and the Digital Millenium Copyright Act of 1998 (http://www.loc.gov/copyright/legislation/dmca.pdf). Under section 1204 of the DMCA, penalties range up to a $500,000 fine or up to five years imprisonment for a first offense. Think about it; pay for a license, avoid prosecution, and feel better about yourself.";public String getSerial(String userId, String licenseNum) {java.util.Calendar cal = java.util.Calendar.getInstance();cal.add(1, 3);cal.add(6, -1);java.text.NumberFormat nf = new java.text.DecimalFormat("000");licenseNum = nf.format(Integer.valueOf(licenseNum));String verTime = new StringBuilder("-").append(new java.text.SimpleDateFormat("yyMMdd").format(cal.getTime())).append("0").toString();String type = "YE3MP-";String need = new StringBuilder(userId.substring(0, 1)).append(type).append("300").append(licenseNum).append(verTime).toString();String dx = new StringBuilder(need).append(LL).append(userId).toString();int suf = this.decode(dx);String code = new StringBuilder(need).append(String.valueOf(suf)).toString();return this.change(code);}private int decode(String s) {int i;char[] ac;int j;int k;i = 0;ac = s.toCharArray();j = 0;k = ac.length;while (j < k) {i = (31 * i) + ac[j];j++;}return Math.abs(i);}private String change(String s) {byte[] abyte0;char[] ac;int i;int k;int j;abyte0 = s.getBytes();ac = new char[s.length()];i = 0;k = abyte0.length;while (i < k) {j = abyte0[i];if ((j >= 48) && (j <= 57)) {j = (((j - 48) + 5) % 10) + 48;} else if ((j >= 65) && (j <= 90)) {j = (((j - 65) + 13) % 26) + 65;} else if ((j >= 97) && (j <= 122)) {j = (((j - 97) + 13) % 26) + 97;}ac[i] = (char) j;i++;}return String.valueOf(ac);}public MyEclipseGEN() {super();}public static void main(String[] args) {try {System.out.println("please input register name:");BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));String userId = null;userId = reader.readLine();MyEclipseGEN myeclipsegen = new MyEclipseGEN();String res = myeclipsegen.getSerial(userId, "20");System.out.println("Serial:" + res);reader.readLine();} catch (IOException ex) {}}}

public class Plugin {private String path;public Plugin(String path) {this.path = path;}public void print() {List list = getFileList(path);if (list == null) {return;}int length = list.size();for (int i = 0; i < length; i++) {String result = "";String thePath = getFormatPath(getString(list.get(i)));File file = new File(thePath);if (file.isDirectory()) {String fileName = file.getName();if (fileName.indexOf("_") < 0) {continue;}String[] filenames = fileName.split("_");String filename1 = filenames[0];String filename2 = filenames[1];result = filename1 + "," + filename2 + ",file:/" + path + "\"+ fileName + "\\,4,false";System.out.println(result);} else if (file.isFile()) {String fileName = file.getName();if (fileName.indexOf("_") < 0) {continue;}String[] filenames = fileName.split("_");String filename1 = filenames[0];String filename2 = filenames[1].substring(0, filenames[1].lastIndexOf("."));result = filename1 + "," + filename2 + ",file:/" + path + "\"+ fileName + ",4,false";System.out.println(result);}}}public List getFileList(String path) {path = getFormatPath(path);path = path + "/";File filePath = new File(path);if (!filePath.isDirectory()) {return null;}String[] filelist = filePath.list();List filelistFilter = new ArrayList();for (int i = 0; i < filelist.length; i++) {String tempfilename = getFormatPath(path + filelist[i]);filelistFilter.add(tempfilename);}return filelistFilter;}public String getString(Object object) {if (object == null) {return "";}return String.valueOf(object);}public String getFormatPath(String path) {path = path.replaceAll("\\\", "/");path = path.replaceAll("//", "/");return path;}public static void main(String[] args) {new Plugin("D:\\Program Files\\MyEclipse 7.1\\plugins").print();}}