1.按照findByFieldNameBy(List<fieldType> list)的规则定义抽象方法 2.使用 相当于 MyBatis 的 <!--item: 元素代词--> select * from t_user <where> <if test="timeList != null and timeList.size() > 1"> pwd_err in <foreach collection="timeList" item="item" open="(" separator=",...
System.out.println("findByNameAndMoney return: " + res); Integer id = 5; res = moneyCurdRepository.findByNameOrId(name, id); System.out.println("findByNameOrId return: " + res); } 执行之后输出结果如下,下面也包括了对应的sql,便于理解 Hibernate: select moneypo0_.id as id1_0_, mone...
*@return*/List<MoneyPO>findByNameOrId(String name, Integer id); 一个简单的测试case可以如下 privatevoidqueryByField(){// 根据内部成员进行查询,需要自己定义新的接口Stringname="一灰灰blog"; Iterable<MoneyPO> res = moneyCurdRepository.findByName(name); System.out.println("findByName return: "+...
我刚发现我应该改变@GetMapping("/professeurs/prenom")至@GetMapping("/professeurs/prenom/{prenom}")
private void queryByField() { // 根据内部成员进行查询,需要自己定义新的接口 String name = "一灰灰blog"; Iterable<MoneyPO> res = moneyCurdRepository.findByName(name); System.out.println("findByName return: " + res); res = moneyCurdRepository.queryByName(name); ...
Field[] fields = clazz.getDeclaredFields(); Map<String, Object> conditions = param.getCondition(); List<Predicate> predicates = new ArrayList<>(); for (int i = 0; i < fields.length; i++) { fields[i].setAccessible(true); String name = fields[i].getName(); ...
equals(fieldTypeClass.getName())) { retVal = Double.parseDouble(value.toString()); } else { retVal = value; } return retVal; } } 五、总结 :jpa 的宗旨是减少原生sql,所以开发中尽量少用,因此这对数据库表的设计要求很高,要设计的合理。如果项目中遇到查询只需要关联一两个表的,还是分别查询出...
String name = field.getName(); field.setAccessible(true); Object value = field.get(entity); if (value != null) { if (field.getAnnotation(IgnoreQueryParam.class) != null) { logger.debug("存在@IgnoreQueryParam注解, 跳出"); continue; ...
The only important bit is the By keyword, anything following it is treated as a field name (with the exception of other keywords like OrderBy which incidentially can lead to some strange looking method names like findAllByOrderByIdAsc). This means something like this is perfectly valid: ...
似乎没有自动生成器来构建JPA查询的所有可能组合,但您应该像这样使用JPA动态查询的功能:...