<if test=" name != null and name.equals('B'.toString())"> -- 返回true 1. 2. 3. 4. 5. 可能是因为OGNL对单字符的识别 当成了char类型 ,而我们代码中是String类型,所以判断成了false。 所以在Mybatis的XML文件中判断字符串是否相等,建议使用test=' name != null and name.equals("B")'即单...
if (value instanceof Boolean) { //如果是Boolean return (Boolean) value; } if (value instanceof Number) { //如果是Number,判断不为0 return !new BigDecimal(String.valueOf(value)).equals(BigDecimal.ZERO); } //否则判断不为null return value != null; } 1. 2. 3. 4. 5. 6. 7. 8. 9...
--if 标签使用类似html的C标签的if-->select * from t_user where<iftest="id != null and id != ''">id=#{id}</if><iftest="username != null and username != ''">and username like concat('%',#{username},'%')</if><iftest="password != null and password != ''">and password...
boolean equals(User user1, User user2); } @Entity @Table(name = "user") public class User { @Id private Long id; private String name; // 省略其他属性... @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass(...
if (value instanceof Number) return !new BigDecimal(String.valueOf(value)).equals(BigDecimal.ZERO); return value != null; } 跟进去看看,终于找到了解析表达式的方法private static Object parseExpression(String expression),该方法会先从缓存取值,如果没有便进行解析并放入缓存中,然后调用Ognl.getValue(parse...
private<T>voidregister(Type javaType,TypeHandler<?extendsT>typeHandler){// 获取@MappedJdbcTypes注解MappedJdbcTypes mappedJdbcTypes=typeHandler.getClass().getAnnotation(MappedJdbcTypes.class);if(mappedJdbcTypes!=null){// 遍历获取注解中指定的 JdbcType 类型for(JdbcType handledJdbcType:mappedJdbcTypes.value(...
if (value instanceof Number) return !new BigDecimal(String.valueOf(value)).equals(BigDecimal.ZERO); return value != null; } 跟进去看看,终于找到了解析表达式的方法private static Object parseExpression(String expression),该方法会先从缓存取值,如果没有便进行解析并放入缓存中,然后调用Ognl.getValue(parse...
= null">and status=#{status,jdbcType=INTEGER}</if></where> 解决方式2: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 <where><iftest="status != null and status !='' or status==0">and status=#{status,jdbcType=INTEGER}</if></where> 解决方式3: 将0转化为String类型...
publicvoid configureTimezone() {String configuredTimeZoneOnServer = this.serverSession.getServerVariable("time_zone");if ("SYSTEM".equalsIgnoreCase(configuredTimeZoneOnServer)) {configuredTimeZoneOnServer = this.serverSession.getServerVariable("system_time_zone");}String canonicalTimezone = getPropertySet...
同时重写了CacheKey的equals方法,代码如下所示: @Overridepublicbooleanequals(Object object){ ...for(inti =0; i < updateList.size(); i++) { Object thisObject = updateList.get(i); Object thatObject = cacheKey.updateList.get(i);if(!ArrayUtil.equals(thisObject, thatObject)) {returnfalse; ...