/** * 实体类数据获取并插入builder(反射机制,已废弃) * @param obj 需要获取数据的实体类 * @param builder 需要插入数据的Builder * @throws Exception */ public static void entityGet(Object obj, Builder builder) throws Exception { Field[] fields = obj.getClass().getDeclaredFields(); for (int j = 0; j < fields.length; j++) { Field field = fields[j]; PropertyDescriptor pd = new PropertyDescriptor(field.getName(), obj.getClass()); Method getMethod = pd.getReadMethod(); if (getMethod != null) { if ("class java.util.Date".equals(field.getType().toString()) && getMethod.invoke(obj) != null) { builder.addField(field.getName(), new SimpleDateFormat("yyyy-MM-dd").format((Date) getMethod.invoke(obj))); } else if ("class java.lang.Integer".equals(field.getType().toString()) && getMethod.invoke(obj) != null) { builder.addField(field.getName(), Integer.toString((int) getMethod.invoke(obj))); } else { if (getMethod.invoke(obj) != null) { builder.addField(field.getName(), (String) getMethod.invoke(obj)); } else { builder.addField(field.getName(), ""); } } } } }
开始实体类映射使用的是反射机制,发现速度不够快,后改用BeanMap来映射,速度翻倍。
/** * 实体类数据获取并插入builder(BeanMap映射机制) * @param obj 需要获取数据的实体类 * @param builder 需要插入数据的Builder * @throws Exception */ @SuppressWarnings("unchecked") public static Builder entityGetTest(AlarmInfluxDB obj, Builder builder) throws InterruptedException { BeanMap map = BeanMap.create(new AlarmInfluxDB()); map.setBean(obj); builder.fields(map); return builder; }
<dependency> <groupId>cglib</groupId> <artifactId>cglib-nodep</artifactId> <version>2.2.2</version> </dependency>