zhujiabindragon

Struts2+spring+MyBatis增删改查操作

在我的博客首页有s2sh整合的例子，现在要做的工作就是将此工程中hibernate换成mybatis，并且使用比较流行的annotation注解来实现。首先肯定是要将hibernate的jar包全部干掉，然后加上mybatis的jar包及其与spring整合所需jar包，下面只贴主要改动的类及其配置文件：

一.mybatis配置文件mybatis-config.xml

1. >

4. alias="User" type="com.anxin.bean.User" />

5. alias="Student" type="com.anxin.bean.Student" />

8. resource="com/anxin/orm/mapping/User.xml" />

9. resource="com/anxin/orm/mapping/Student.xml" />

10.

11.

二、bean的mapper文件

Student.xml

1. version="1.0" encoding="utf-8" ?>

2. >

3. namespace="Student">

30.

31. class="com.mchange.v2.c3p0.ComboPooledDataSource">

32.

33.

34. ${driverClass}

35.

36.

37.

38. ${jdbcUrl}

39.

40.

41.

42. ${user}

43.

44.

45.

46. ${password}

47.

48.

49.

50. 20

51.

52.

53.

54. 2

55.

56.

57.

58. 2

59.

60.

61.

62. 20

63.

64.

65.

66. class="org.mybatis.spring.SqlSessionFactoryBean">

67.

68. value="classpath:mybatis-config.xml" />

69.

70.

71.

72.

73.

74.

75.

76. class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

77.

78.

79.

80.

81.

82. 四、泛型基类BaseDAOImpl.java

83. package com.anxin.dao.impl;

84.

85. import java.io.Serializable;

86. import java.util.List;

87. import java.util.Map;

88.

89. import javax.annotation.Resource;

90.

91. import org.apache.ibatis.session.SqlSessionFactory;

92. import org.mybatis.spring.support.SqlSessionDaoSupport;

93. import org.slf4j.Logger;

94. import org.slf4j.LoggerFactory;

95. import org.springframework.beans.factory.annotation.Autowired;

96.

97. import com.anxin.dao.BaseDAO;

98. import com.anxin.util.PageListData;

99.

100. public class BaseDAOImpl extends

101. SqlSessionDaoSupport implements BaseDAO {

102.

103. public static Logger logger = LoggerFactory.getLogger(BaseDAOImpl.class);

104. @Autowired(required = true)

105. @Resource(name = "sqlSessionFactory")

106. public void setSuperSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {

107. super.setSqlSessionFactory(sqlSessionFactory);

108. }

109. // 保存

110. public T save(T entity) {

111. try {

112. getSqlSessionTemplate().insert(

113. entity.getClass().getSimpleName() + ".save", entity);

114. return entity;

115. } catch (RuntimeException re) {

116. logger.error("save " + entity.getClass().getName() + " failed :{}",

117. re);

118. throw re;

119. }

120. }

121. // 更新

122. public void update(T entity) {

123. try {

124. this.getSqlSessionTemplate().update(

125. entity.getClass().getSimpleName() + ".update", entity);

126. } catch (RuntimeException re) {

127. logger.error("update " + entity.getClass().getName()

128. + " failed :{}", re);

129. throw re;

130. }

131. }

132. // 删除

133. public void delete(T entity) {

134. try {

135. this.getSqlSessionTemplate().delete(

136. entity.getClass().getSimpleName() + ".delete", entity);

137. } catch (RuntimeException re) {

138. logger.error("delete " + entity.getClass().getName()

139. + " failed :{}", re);

140. throw re;

141. }

142. }

143.

144. // 根据id删除某个对象

145. public void delete(Class entityClass, PK id) {

146. try {

147. this.getSqlSessionTemplate().delete(

148. entityClass.getSimpleName() + ".deleteById", id);

149. } catch (RuntimeException re) {

150. logger.error("delete " + entityClass.getName() + "failed :{}", re);

151. throw re;

152. }

153. }

154. // 根据id加载某个对象

155. public T findById(Class entityClass, PK id) {

156. try {

157. return (T) this.getSqlSessionTemplate().selectOne(

158. entityClass.getSimpleName() + ".findById", id);

159. } catch (RuntimeException re) {

160. logger.error("findById " + entityClass.getName() + "failed :{}",

161. re);

162. throw re;

163. }

164. }

165.

166. // 查找所有的对象

167. public List findAll(Class entityClass) {

168. try {

169. return this.getSqlSessionTemplate().selectList(

170. entityClass.getSimpleName() + ".findAll");

171. } catch (RuntimeException re) {

172. logger

173. .error("findAll " + entityClass.getName() + "failed :{}",

174. re);

175. throw re;

176. }

177. }

178. // 根据查询参数，当前页数，每页显示的数目得到分页列表

179. public PageListData queryPage(Class entityClass, Map param,

180. int currentPage, int pageSize) {

181. try {

182. return new PageListData((Integer)getSqlSessionTemplate()

183. .selectOne(entityClass.getSimpleName()+".getTotalCounts",param), pageSize, currentPage, this

184. .getSqlSessionTemplate().selectList(

185. entityClass.getSimpleName() + ".queryPage", param));

186. } catch (RuntimeException re) {

187. logger.error("findList " + entityClass.getName() + "failed :{}",

188. re);

189. throw re;

190. }

191. }

192. }

193.

194.

195.

196.

197.

198.

199. StudentDAOImpl.java

200.

201.

202.

203.

204. package com.anxin.dao.impl;

205.

206. import org.springframework.stereotype.Repository;

207.

208. import com.anxin.bean.Student;

209. import com.anxin.dao.StudentDAO;

210.

211. @Repository

212. public class StudentDAOImpl extends BaseDAOImpl implements StudentDAO {

213. }

214.

215.

216.

217.

218.

219.

220.

mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd" >