} } }

    java开辟_mysql中获取数据库表描述_源码

    添加时间:2013-8-5 点击量:

    功能描述:


    在mysql数据库中,有两张表:


    data_element_config test_table


    我们须要获取表:test_table表的描述信息,然后把描述信息插入到表:data_element_config中记录成果


    项目布局:



    运行结果:


    把握台输出结果:



    数据库表:data_element_config景象



    ================================================


    代码项目组:


    ================================================


    data_element_config神情况:



    1 CREATE TABLE `data_element_config` (
    
    2 `de_name` varchar75NOT NULL
    3 `de_group` varchar15NOT NULL
    4 `memo` varchar300NOT NULL
    5 `data_type` int11NOT NULL
    6 `value_check` varchar10NOT NULL
    7 `yx_bj` char1NOT NULL
    8 PRIMARY KEY (`de_name`)
    9 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;


    test_table神情况:



    CREATE TABLE `test_table` (
    
    `Test_ID`
    int11NOT NULL AUTO_INCREMENT COMMENT 主键(自增长)
    `Test_Key`
    varchar10) COLLATE utf8_bin NOT NULL COMMENT 种类
    `Test_Value`
    varchar20) COLLATE utf8_bin NOT NULL COMMENT 数值
    `Test_Type`
    int11NOT NULL COMMENT 内部类型
    `Test_BelongTo`
    int11DEFAULT NULL COMMENT 附属关系
    `Test_Grade`
    int11DEFAULT 1 COMMENT 等级
    `Test_Remark`
    varchar50) COLLATE utf8_bin DEFAULT NULL COMMENT 备注
    `Test_Visible`
    bit1DEFAULT b1 COMMENT 是否可见
    PRIMARY KEY (`Test_ID`)
    ) ENGINE
    =InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT=测试表;


    /DataElementConfigTool/src/com/b510/data/element/config/tool/DataBaseBO.java



      1 package com.b510.data.element.config.tool;
    
    2
    3 import java.io.Serializable;
    4 import java.util.List;
    5
    6 /
    7 数据库设备信息
    8
    9 @author Hongten
    10 @mail hongtenzone@foxmail.com
    11 @create 2013-8-3
    12 /
    13 public class DataBaseBO implements Serializable {
    14 private static final long serialVersionUID = 171777003280248377L;
    15 private final String SELECT_SQL_FIELD = column_name as field,;
    16 private final String SELECT_SQL_TYPE = data_type as type,;
    17 private final String SELECT_SQL_MEMO = column_comment as memo,;
    18 private final String SELECT_SQL_MUNERIC_LENGTH = numeric_precision as munericLength,;
    19 private final String SELECT_SQL_NUMERIC_SCALE = numeric_scale as numericScale, ;
    20 private final String SELECT_SQL_ISNULLABLE = is_nullable as isNullable,;
    21 private final String SELECT_SQL_EXTRA = CASE WHEN extra = auto_increment THEN 1 ELSE 0 END as extra,;
    22 private final String SELECT_SQL_ISDEFAULT = column_default as isDefault,;
    23 private final String SELECT_SQL_CHARACTER_LENGTH = character_maximum_length AS characterLength ;
    24 /
    25 查询表布局sql
    26 /
    27 private String SQL = SELECT + SELECT_SQL_FIELD + SELECT_SQL_TYPE + SELECT_SQL_MEMO + SELECT_SQL_MUNERIC_LENGTH + SELECT_SQL_NUMERIC_SCALE + SELECT_SQL_ISNULLABLE + SELECT_SQL_EXTRA + SELECT_SQL_ISDEFAULT + SELECT_SQL_CHARACTER_LENGTH + FROM Information_schema.columns WHERE table_Name = ;
    28 /
    29 驱动名称
    30 /
    31 private String driver;
    32 /
    33 数据库名称
    34 /
    35 private String dbName;
    36 /
    37 数据库暗码
    38 /
    39 private String passwrod;
    40 /
    41 数据库用户名
    42 /
    43 private String userName;
    44 /
    45 接见数据库的url
    46 /
    47 private String url;
    48 /
    49 端标语
    50 /
    51 private String port;
    52 /
    53 ip地址
    54 /
    55 private String ip;
    56 /
    57 数据类型:mysql, oracle等等
    58 /
    59 private String dbType;
    60
    61 /
    62 按照sql:show tables;查询出的数据库表名称
    63 /
    64 private List<String> tables;
    65 /
    66 数据库表名称
    67 /
    68 private String tableName;
    69 /
    70 sql语句
    71 /
    72 private String sql;
    73
    74 public String getDriver() {
    75 return driver;
    76 }
    77
    78 public void setDriver(String driver) {
    79 this.driver = driver;
    80 }
    81
    82 public String getDbName() {
    83 return dbName;
    84 }
    85
    86 public void setDbName(String dbName) {
    87 this.dbName = dbName;
    88 }
    89
    90 public String getPasswrod() {
    91 return passwrod;
    92 }
    93
    94 public void setPasswrod(String passwrod) {
    95 this.passwrod = passwrod;
    96 }
    97
    98 public String getUserName() {
    99 return userName;
    100 }
    101
    102 public void setUserName(String userName) {
    103 this.userName = userName;
    104 }
    105
    106 public String getUrl() {
    107 return url;
    108 }
    109
    110 public void setUrl(String url) {
    111 this.url = url;
    112 }
    113
    114 public String getSql() {
    115 return sql;
    116 }
    117
    118 public void setSql(String sql) {
    119 this.sql = sql;
    120 }
    121
    122 public String getPort() {
    123 return port;
    124 }
    125
    126 public void setPort(String port) {
    127 this.port = port;
    128 }
    129
    130 public String getIp() {
    131 return ip;
    132 }
    133
    134 public void setIp(String ip) {
    135 this.ip = ip;
    136 }
    137
    138 public String getDbType() {
    139 return dbType;
    140 }
    141
    142 public void setDbType(String dbType) {
    143 this.dbType = dbType;
    144 }
    145
    146 public static long getSerialversionuid() {
    147 return serialVersionUID;
    148 }
    149
    150 public List<String> getTables() {
    151 return tables;
    152 }
    153
    154 public void setTables(List<String> tables) {
    155 this.tables = tables;
    156 }
    157
    158 public String getTableName() {
    159 return tableName;
    160 }
    161
    162 public void setTableName(String tableName) {
    163 this.tableName = tableName;
    164 }
    165
    166 public String getSelectSQL() {
    167 return SQL;
    168 }
    169
    170 public void setSelectSQL(String SQL) {
    171 this.SQL = SQL;
    172 }
    173
    174 }


    /DataElementConfigTool/src/com/b510/data/element/config/tool/DataElementConfigBO.java



      1 /
    
    2
    3 /
    4 package com.b510.data.element.config.tool;
    5
    6 import java.io.Serializable;
    7
    8 /
    9 data_element_config这张表的BO类
    10
    11 @author Hongten
    12 @mail hongtenzone@foxmail.com
    13 @create 2013-8-3
    14 /
    15 public class DataElementConfigBO implements Serializable {
    16 private static final long serialVersionUID = -5951470192914621265L;
    17 /
    18 数据库表的字段名称:TableDescBO - field
    19 /
    20 private String deName;
    21 /
    22 数据库表的分组,这里主如果在却别不合的字段名称<br>
    23 如:有同一个字段名为<code>name</code>,那么在生成DE的过程中体系不知道<br>
    24 是哪一个组或者哪一个用例的<code>name</code>字段,,若是一个字段是<code>TEST</code><br>
    25 一个字段是<code>DEMO</code>的,那么在生成DE的时辰,就很轻易区分了<br>
    26 则分别生成的DE是:<code>DE_TEST_NAME</code>和<code>DE_DEMO_NAME</code><br>
    27 /
    28 private String deGroup;
    29 /
    30 数据库表字段的描述
    31 /
    32 private String memo;
    33 /
    34 数据库表字段对应的数据类型
    35 /
    36 private int dataType;
    37 /
    38 该属性默认为:<code>true</code>,不消去批改
    39 /
    40 private String valueCheck;
    41 /
    42 有效标识表记标帜,这里同一设置为:<code>1</code>,默示有效的<br>
    43 若是设置为:<code>0</code>,则在生成DE的时辰,该类会被标识表记标帜为:<code>@Deprecated</code>
    44 /
    45 private String yxBj;
    46 /
    47 插入数据库表:<code>data_element_config</code>的sql语句
    48 /
    49 private String IntoSQL = INSERT INTO DATA_ELEMENT_CONFIG(DE_NAME,DE_GROUP,MEMO,DATA_TYPE,VALUE_CHECK,YX_BJ) VALUES (;
    50
    51 public String getDeName() {
    52 return deName;
    53 }
    54
    55 public void setDeName(String deName) {
    56 this.deName = deName;
    57 }
    58
    59 public String getDeGroup() {
    60 return deGroup;
    61 }
    62
    63 public void setDeGroup(String deGroup) {
    64 this.deGroup = deGroup;
    65 }
    66
    67 public String getMemo() {
    68 return memo;
    69 }
    70
    71 public void setMemo(String memo) {
    72 this.memo = memo;
    73 }
    74
    75 public int getDataType() {
    76 return dataType;
    77 }
    78
    79 public void setDataType(int dataType) {
    80 this.dataType = dataType;
    81 }
    82
    83 public String getValueCheck() {
    84 return valueCheck;
    85 }
    86
    87 public void setValueCheck(String valueCheck) {
    88 this.valueCheck = valueCheck;
    89 }
    90
    91 public String getYxBj() {
    92 return yxBj;
    93 }
    94
    95 public void setYxBj(String yxBj) {
    96 this.yxBj = yxBj;
    97 }
    98
    99 public String getInsertIntoSQL() {
    100 return IntoSQL;
    101 }
    102
    103 public void setInsertIntoSQL(String IntoSQL) {
    104 this.IntoSQL = IntoSQL;
    105 }
    106
    107 }


    /DataElementConfigTool/src/com/b510/data/element/config/tool/DataElementConfigTool.java



      1 package com.b510.data.element.config.tool;
    
    2
    3 import java.sql.Connection;
    4 import java.sql.DriverManager;
    5 import java.sql.PreparedStatement;
    6 import java.sql.ResultSet;
    7 import java.sql.SQLException;
    8 import java.util.ArrayList;
    9 import java.util.List;
    10
    11 /
    12 DE数据插入对象
    13
    14 @author Hongten
    15 @mail hongtenzone@foxmail.com
    16 @create 2013-8-3
    17 /
    18 public class DataElementConfigTool {
    19
    20 public static void main(String[] args) {
    21 // 设置数据库链接信息
    22 DataBaseBO dataBaseBO = new DataBaseBO();
    23 dataBaseBO.setDbName(sworddemo);
    24 dataBaseBO.setDriver(com.mysql.jdbc.Driver);
    25 dataBaseBO.setUserName(root);
    26 dataBaseBO.setPasswrod(gzcss);
    27 dataBaseBO.setTableName(test_table);
    28 dataBaseBO.setSql(dataBaseBO.getSelectSQL() + dataBaseBO.getTableName());
    29 System.out.println(dataBaseBO.getSql());
    30 // 初始化数据库链接的相干信息
    31 DataElementConfigTool tool = new DataElementConfigTool(dataBaseBO);
    32 // 数据库表布局景象
    33 List<TableDescBO> list = tool.getTableDescBOList(dataBaseBO);
    34 System.out.println( Field Type Null Key Default Extra memo);
    35 if (list != null) {
    36 for (TableDescBO bo : list) {
    37 System.out.println(bo.toString());
    38 // 对数据库表描述进行封装成DataElementConfigBO对象
    39 DataElementConfigBO decBo = tool.getDataElementConfigBO(bo, gnzy);
    40 // 向数据库表:data_element_config中插入数据
    41 int result = tool.IntoDECTable(dataBaseBO, decBo);
    42 System.out.println(插入数据: + (result == 1 ? 成功 : 失败));
    43 }
    44 }
    45 }
    46
    47 /
    48 初始化数据库链接的相干信息
    49
    50 @param dataBaseBO
    51 数据库设备信息
    52 /
    53 public DataElementConfigTool(DataBaseBO dataBaseBO) {
    54 super();
    55 dataBaseBO.setIp(dataBaseBO.getIp() == null ? localhost : dataBaseBO.getIp());
    56 dataBaseBO.setPort(dataBaseBO.getPort() == null ? 3306 : dataBaseBO.getPort());
    57 dataBaseBO.setUrl(jdbc:mysql:// + dataBaseBO.getIp() + : + dataBaseBO.getPort() + / + dataBaseBO.getDbName());
    58 }
    59
    60 /
    61 数据库表布局景象
    62
    63 @param dataBaseBO
    64 数据库设备信息
    65 @return 所需查询的数据表的字段信息
    66 /
    67 public List<TableDescBO> getTableDescBOList(DataBaseBO dataBaseBO) {
    68 List<TableDescBO> list = new ArrayList<TableDescBO>();
    69 TableDescBO tableDescBO = null;
    70 try {
    71 Class.forName(dataBaseBO.getDriver());
    72 Connection conn = DriverManager.getConnection(dataBaseBO.getUrl(), dataBaseBO.getUserName(), dataBaseBO.getPasswrod());
    73 PreparedStatement ps = conn.prepareStatement(dataBaseBO.getSql());
    74 ResultSet rs = ps.executeQuery();
    75 while (rs.next()) {
    76 tableDescBO = new TableDescBO();
    77 tableDescBO.setField(rs.getString(1));
    78 tableDescBO.setType(rs.getString(2));
    79 tableDescBO.setMemo(rs.getString(3));
    80 tableDescBO.setMunericLength(rs.getString(4));
    81 tableDescBO.setNumericScale(rs.getString(5));
    82 tableDescBO.setIsNullable(rs.getString(6));
    83 tableDescBO.setExtra(rs.getString(7));
    84 tableDescBO.setIsDefault(rs.getString(8));
    85 tableDescBO.setCharacterLength(rs.getString(9));
    86 list.add(tableDescBO);
    87 }
    88 close(rs, ps, conn);
    89 } catch (Exception e) {
    90 e.printStackTrace();
    91 }
    92 return list;
    93 }
    94
    95 /
    96 履行向数据库表:<code>data_element_config</code>中插入数据
    97
    98 @param dataBaseBO
    99 数据库设备信息
    100 @param decBo
    101 data_element_config这张表的BO类
    102 @return 返回:<code>-1</code>, 默示插入数据失败,不然成功
    103 /
    104 public int IntoDECTable(DataBaseBO dataBaseBO, DataElementConfigBO decBo) {
    105 int result = -1;
    106 if (decBo != null) {
    107 String sql = decBo.getInsertIntoSQL() + decBo.getDeName() + , + decBo.getDeGroup() + , + decBo.getMemo() + , + decBo.getDataType() + , + decBo.getValueCheck() + , + decBo.getYxBj() + );
    108 try {
    109 Class.forName(dataBaseBO.getDriver());
    110 Connection conn = DriverManager.getConnection(dataBaseBO.getUrl(), dataBaseBO.getUserName(), dataBaseBO.getPasswrod());
    111 PreparedStatement ps = conn.prepareStatement(sql);
    112 result = ps.executeUpdate();
    113 close(null, ps, conn);
    114 } catch (Exception e) {
    115 e.printStackTrace();
    116 }
    117 }
    118 return result;
    119 }
    120
    121 /
    122 去除括号,如:int(11),去除括号了今后,为:int
    123
    124 @param oldType
    125 @return
    126 /
    127 public static String getType(String oldType) {
    128 if (oldType != null && !oldType.equals()) {
    129 return oldType.substring(0, oldType.indexOf(());
    130 }
    131 return null;
    132 }
    133
    134 /
    135 对数据库表描述进行封装成DataElementConfigBO对象
    136
    137 @param tableDescBO
    138 数据库表的描述
    139 @param group
    140 字段的分组名称,在表:<code>data_element_config</code>中对应的
    141 <code>de_group</code>字段
    142 @return dataElementConfig对象的一个实例
    143 /
    144 public DataElementConfigBO getDataElementConfigBO(TableDescBO tableDescBO, String group) {
    145 DataElementConfigBO bo = null;
    146 if (tableDescBO != null) {
    147 bo = new DataElementConfigBO();
    148 bo.setDeName( + tableDescBO.getField() + );
    149 bo.setDeGroup( + group + );
    150 bo.setValueCheck(true);
    151 bo.setYxBj(1);
    152 bo.setMemo( + tableDescBO.getMemo() + );
    153 bo.setDataType(1);
    154 }
    155 return bo;
    156 }
    157
    158 /
    159 封闭数据库的相干链接
    160
    161 @param rs
    162 记录集
    163 @param ps
    164 声明
    165 @param conn
    166 链接对象
    167 /
    168 public void close(ResultSet rs, PreparedStatement ps, Connection conn) {
    169 // 封闭记录集
    170 if (rs != null) {
    171 try {
    172 rs.close();
    173 } catch (SQLException e) {
    174 e.printStackTrace();
    175 }
    176 }
    177 // 封闭声明
    178 if (ps != null) {
    179 try {
    180 ps.close();
    181 } catch (SQLException e) {
    182 e.printStackTrace();
    183 }
    184 }
    185 // 封闭链接对象
    186 if (conn != null) {
    187 try {
    188 conn.close();
    189 } catch (SQLException e) {
    190 e.printStackTrace();
    191 }
    192 }
    193 }
    194 }


    /DataElementConfigTool/src/com/b510/data/element/config/tool/TableDescBO.java



      1 /
    
    2
    3 /
    4 package com.b510.data.element.config.tool;
    5
    6 import java.io.Serializable;
    7
    8 /
    9 数据库表布局景象BO
    10
    11 @author Hongten
    12 @mail hongtenzone@foxmail.com
    13 @create 2013-8-3
    14 /
    15 public class TableDescBO implements Serializable {
    16 private static final long serialVersionUID = 6450523501528806316L;
    17 /
    18 数据库表中对应的字段名称
    19 /
    20 private String field;
    21 /
    22 数据库表中对应字段的类型
    23 /
    24 private String type;
    25 /
    26 数据库表中字段是否为空:YES/NO
    27 /
    28 private String isNullable;
    29 /
    30 是否为主键:KEY,不是,则为空,null
    31 /
    32 private String key;
    33 /
    34 字段的默认值
    35 /
    36 private String isDefault;
    37 /
    38 额外的属性,如:auto_increment
    39 /
    40 private String extra;
    41 /
    42 小数位数
    43 /
    44 private String numericScale;
    45 /
    46 数字长度
    47 /
    48 private String munericLength;
    49
    50 /
    51 字符长度
    52 /
    53 private String characterLength;
    54 /
    55 备注
    56 /
    57 private String memo;
    58
    59 /
    60 重写toStirng办法 主如果为了把握台输出
    61 /
    62 public String toString() {
    63 return + field + + type + + isNullable + + key + + isDefault + + extra + + memo;
    64 }
    65
    66 public String getField() {
    67 return field;
    68 }
    69
    70 public void setField(String field) {
    71 this.field = field;
    72 }
    73
    74 public String getType() {
    75 return type;
    76 }
    77
    78 public void setType(String type) {
    79 this.type = type;
    80 }
    81
    82 public String getIsNullable() {
    83 return isNullable;
    84 }
    85
    86 public void setIsNullable(String isNullable) {
    87 this.isNullable = isNullable;
    88 }
    89
    90 public String getKey() {
    91 return key;
    92 }
    93
    94 public void setKey(String key) {
    95 this.key = key;
    96 }
    97
    98 public String getIsDefault() {
    99 return isDefault;
    100 }
    101
    102 public void setIsDefault(String isDefault) {
    103 this.isDefault = isDefault;
    104 }
    105
    106 public String getExtra() {
    107 return extra;
    108 }
    109
    110 public void setExtra(String extra) {
    111 this.extra = extra;
    112 }
    113
    114 public String getNumericScale() {
    115 return numericScale;
    116 }
    117
    118 public void setNumericScale(String numericScale) {
    119 this.numericScale = numericScale;
    120 }
    121
    122 public String getMunericLength() {
    123 return munericLength;
    124 }
    125
    126 public void setMunericLength(String munericLength) {
    127 this.munericLength = munericLength;
    128 }
    129
    130 public String getCharacterLength() {
    131 return characterLength;
    132 }
    133
    134 public void setCharacterLength(String characterLength) {
    135 this.characterLength = characterLength;
    136 }
    137
    138 public String getMemo() {
    139 return memo;
    140 }
    141
    142 public void setMemo(String memo) {
    143 this.memo = memo;
    144 }
    145
    146 }


     项目源码:http://files.cnblogs.com/hongten/DataElementConfigTool.zip


    jar包:http://files.cnblogs.com/hongten/DECTool_needParams.jar.zip

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