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2024年1月16日发(作者:voltage什么意思)
String findFieldSql = "SELECT format_type(id,mod) as type,e as name, null as notnull" +"FROM pg_class as c,pg_attribute as a where e = "" + tableName + "" and id = and >0";PreparedStatement fieldsPrst = eStatement(findFieldSql);ResultSet fieldsRs = eQuery();while (()) {String fieldType = ing(1);String fieldName = ing(2);(fieldName, );}DynmicEntity bean = new DynmicEntity(attrMap);(bean);}} catch (SQLException e) {tackTrace();}(prst, conn);}}:package ;import tion;import Manager;import edStatement;import Set;import eption;/*** @author: zhaoxu* @description:*/public class DBUtil {private final static String URL="jdbc:postgresql://localhost:5432/dynmic";private final static String NAME="postgres";private final static String PASS="123456";
();}catch(SQLException e){tackTrace();}}}//关闭编译语句对象public static void close(PreparedStatement prst){if(prst!=null){try{();}catch(SQLException e){tackTrace();}}}//关闭结果对象集public static void close(Connection conn){if(conn!=null){try{();}catch(SQLException e){tackTrace();}}}//对于更新操作关闭资源public static void close(PreparedStatement prst,Connection conn){close(prst);close(conn);}//关闭所有public static void close(ResultSet rs,PreparedStatement prst,Connection conn){close(rs);
return "Student [name=" + name + ", age=" + age + ", address=" + address + "]";}public void sayHello(Book book){n(e());}}package ;public class Book {private String name;public String getName() {return name;}public void setName(String name) { = name;}}package ;import ;import ;import oder;import or;import ject;public class Main {public static void main(String[] args) throws Exception {//Student str --> Student 主类String str = "t";Class> clazz = e(str);//Book实体 str --> Book 参数类String bookStr = "";Class> bookClazz = e(bookStr);//json --> Book 将参数类转为JSONOBJECTString bookJson ="{"name":"Java"}";JSONObject jsonObject=ject(bookJson);//实例化参数类
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