happyjdbc
项目地址:https://github.com/yuancihang/happyjdbc
简化jdbc操作,提供更现代化的api, 支持分库分表
public class DataExample { public static void main(String[] args) throws SQLException { DataAccess.getInstance().addDataSource("local", buildDataSource()); sampleShare(); } private static DataSource buildDataSource() throws SQLException{ return new DataSourceBuilder() .setDbName("my") .setHost("localhost") .setPort(3306) .setUsername("root") .setPassword("123456") .build(); } public static void sampleUniq() throws SQLException{ int result = DataAccess.getInstance() .execute(new OpUniq<Integer>("local", "select c2 from t1 where c1=?", null, 1){}) .uniqResult(); System.err.println(result); T1 t1 = DataAccess.getInstance() .execute(new OpUniq<T1>("local", "select * from t1 where c1=?", null, 1){}) .uniqResult(); System.err.println(t1); Map<String, Object> map = DataAccess.getInstance() .execute(new OpUniq<Map<String, Object>>("local", "select * from t1 where c1=?", null, 1){}) .uniqResult(); for(String name : map.keySet()){ System.err.println(name + "=" + map.get(name)); } } public static void sampleList() throws SQLException{ List<Integer> result = DataAccess.getInstance() .execute(new OpList<Integer>("local", "select c2 from t1", null){}) .listResult(); System.err.println(result); List<T1> t1 = DataAccess.getInstance() .execute(new OpList<T1>("local", "select * from t1", null){}) .listResult(); System.err.println(t1); } public static void sampleUpdate() throws SQLException{ int result = DataAccess.getInstance() .execute(new OpUpdate("local", "update t1 set c2=? where c1=?", null, 3, 1)) .uniqResult(); System.err.println(result); long id = DataAccess.getInstance() .execute(new OpInsertReturnId("local", "insert into t1(c2,c3) value(?,?)", null, 10, 10)) .uniqResult(); System.err.println(id); } public static void sampleTransaction() throws SQLException{ // dbInstance必须一致 List<OpResult<?>> resultList = DataAccess.getInstance().executeTransaction(Arrays.asList( new OpUpdate("local", "update t1 set c2=? where c1=?", null, 4, 1), new OpUpdate("local", "update t1 set c2=? where c1=?", null, 6, 3) )); for(OpResult<?> opResult : resultList){ System.err.println(opResult.uniqResult()); } } public static void sampleShare() throws SQLException{ // table : user_0 ~ user_31 // field: id, name DbShare.getInstance().addRule("user", "'user_'+(shareParam % 32)"); int result = DataAccess.getInstance() .execute(new OpUpdate("local", "update user set name=? where id=?", 32, "zhang", 32)) .uniqResult(); System.err.println(result); } public static class T1{ private long c1; private int c2; private int c3; public long getC1() { return c1; } public void setC1(long c1) { this.c1 = c1; } public int getC2() { return c2; } public void setC2(int c2) { this.c2 = c2; } public int getC3() { return c3; } public void setC3(int c3) { this.c3 = c3; } @Override public String toString(){ return c1+","+c2+","+c3; } } }
maven
<dependency> <groupId>com.github.yuancihang</groupId> <artifactId>happyjdbc</artifactId> <version>1.2</version> </dependency>
gradle
compile 'com.github.yuancihang:happyjdbc:1.2'