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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` varchar(75) NOT NULL,
3 `de_group` varchar(15) NOT NULL,
4 `memo` varchar(300) NOT NULL,
5 `data_type` int(11) NOT NULL,
6 `value_check` varchar(10) NOT NULL,
7 `yx_bj` char(1) NOT NULL,
8 PRIMARY KEY (`de_name`)
9 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;test_table神情况:
CREATE TABLE `test_table` (
`Test_ID` int(11) NOT NULL AUTO_INCREMENT COMMENT 主键(自增长),
`Test_Key` varchar(10) COLLATE utf8_bin NOT NULL COMMENT 种类,
`Test_Value` varchar(20) COLLATE utf8_bin NOT NULL COMMENT 数值,
`Test_Type` int(11) NOT NULL COMMENT 内部类型,
`Test_BelongTo` int(11) DEFAULT NULL COMMENT 附属关系,
`Test_Grade` int(11) DEFAULT 1 COMMENT 等级,
`Test_Remark` varchar(50) COLLATE utf8_bin DEFAULT NULL COMMENT 备注,
`Test_Visible` bit(1) DEFAULT 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