关于mongodb中MongoTemplate的使用

此文章借鉴https://blog.csdn.net/qq_38036909/article/details/93998752，用于以后方便查看，如有问题，请联系我

查询数据

public void mongoDbJavaTest(){
MongoDbJavaTest mongoDbJavaTest = new MongoDbJavaTest();
mongoDbJavaTest.setName("admin");
mongoDbJavaTest.setRemarks("测试");
Query query = Query.query(Criteria.where("name").is("admin"));
mongoTemplate.find(query,MongoDbJavaTest.class);
mongoTemplate.find(query,MongoDbJavaTest.class,"mongodb_java_test");
mongoTemplate.findAll(MongoDbJavaTest.class);
mongoTemplate.findAll(MongoDbJavaTest.class,"mongodb_java_test");
mongoTemplate.query(MongoDbJavaTest.class);
}

插入数据

public void  mongoDbJavaSave(){
List<MongoDbJavaTest> list = new ArrayList<>();
MongoDbJavaTest mongoDbJavaTest = new MongoDbJavaTest();
mongoDbJavaTest.setName("admin");
mongoDbJavaTest.setRemarks("测试");
list.add(mongoDbJavaTest);
//     保存对象到mongodb
mongoTemplate.save(mongoDbJavaTest);
mongoTemplate.insert(mongoDbJavaTest);

//     根据集合名称保存对象到mongodb
mongoTemplate.save(mongoDbJavaTest,"mongodb_java_test");
mongoTemplate.insert(mongoDbJavaTest,"mongodb_java_test");
//     根据集合名称保存list到mongodb
mongoTemplate.save(list,"mongodb_java_test");
mongoTemplate.insert(list,"mongodb_java_test");
mongoTemplate.insert(list,MongoDbJavaTest.class);
}

更新数据

public void  mongoDbJavaUpdate(){
MongoDbJavaTest mongoDbJavaTest = new MongoDbJavaTest();
mongoDbJavaTest.setId("5d1312aeb1829c279c6c256b");
mongoDbJavaTest.setName("admin");
mongoDbJavaTest.setRemarks("测试");
Query query = Query.query(Criteria.where("_id").is("5d1312aeb1829c279c6c256b"));
Update update = Update.update("name","admin");
//        更新一条数据
mongoTemplate.updateFirst(query,update, MongoDbJavaTest.class);
mongoTemplate.updateFirst(query,update, "mongodb_java_test");
mongoTemplate.updateFirst(query,update, MongoDbJavaTest.class,"mongodb_java_test");
//        根据实体更新
mongoTemplate.update(mongoDbJavaTest.getClass());
//        更新多条数据
mongoTemplate.updateMulti(query,update, MongoDbJavaTest.class);
mongoTemplate.updateMulti(query,update,"mongodb_java_test");
mongoTemplate.updateMulti(query,update, MongoDbJavaTest.class,"mongodb_java_test");
//        更新数据，如果数据不存在就新增
mongoTemplate.upsert(query,update, MongoDbJavaTest.class);
mongoTemplate.upsert(query,update,"mongodb_java_test");
mongoTemplate.upsert(query,update, MongoDbJavaTest.class,"mongodb_java_test");
}

删除数据

public void mongoDbJavaRemove(){
List<MongoDbJavaTest> list = new ArrayList<>();
MongoDbJavaTest mongoDbJavaTest = new MongoDbJavaTest();
mongoDbJavaTest.setId("5d1312aeb1829c279c6c256b");
list.add(mongoDbJavaTest);
Query query = Query.query(Criteria.where("_id").in("5d1312aeb1829c279c6c256b","5d13133ab1829c29d02ce29c"));
//        根据条件删除
mongoTemplate.remove(query);
mongoTemplate.remove(mongoDbJavaTest);
mongoTemplate.remove(MongoDbJavaTest.class);
//        根据条件删除（可删除多条）
mongoTemplate.remove(query,CarryUserInfo.class);
mongoTemplate.remove(query,MongoDbJavaTest.class,"mongodb_java_test");
}