org.apache.commons.lang3.ObjectUtils.isEmpty 方法是 Apache Commons Lang 库中的一个实用工具方法,用于判断给定的对象是否为空。这里的“空”不仅仅指 null,还包括一些被认为是“空”的情况,比如字符串为空字符串、集合为空等。 2. 接受的参数类型 该方法接受一个 Ob
ObjectUtil.hashCode(...) /** * 获得对象的编码,如果对象不为null返回对象编码,否则返回0,引用apache.commons.lang包里ObjectUtils.hashCode(Object obj)方法。<br> * @param obj 需要获得编码的对象,可以为null。 * @return 如果对象不为null返回对象编码,否则返回0。 */ public static int hashCode(Object ...
信息: Loading XML bean definitions from class path resource [activiti.cfg.xml] Exception in thread "main"java.lang.NoClassDefFoundError: org/apache/commons/lang3/ObjectUtils at org.activiti.engine.impl.cfg.ProcessEngineConfigurationImpl.initSqlSessionFactory(ProcessEngineConfigurationImpl.java:638) at org.ac...
Stringqrcode_width="200"; if(StringUtils.isNotEmpty(objParams)){ try{ JSONObjectobjParamsJson=JSON.parseObject(objParams); qr_pay_mode=ObjectUtils.toString(objParamsJson.getString("qr_pay_mode"),"2"); qrcode_width=ObjectUtils.toString(objParamsJson.getString("qrcode_width"),"200"); }cat...
org.apache.commons.lang3ObjectUtilsfirstNonNull Javadoc Show more Returns the first value in the array which is not null. If all the values are null or the array is nullor empty then null is returned. ObjectUtils.firstNonNull(null, null) = null ObjectUtils.firstNonNull(null, "") = "" ...
java.lang.noclassdeffounderror:org/apache/commons/lang3/objectutils似乎您没有使用apache commons lang3...
问线程"main“java.lang.NoClassDefFoundError异常: org/apache/commons/lang3/ObjectUtilsENpackage com....
The top level package contains various Utils classes, whilst there are various subpackages including org.apache.commons.lang3.math, org.apache.commons.lang3.concurrent and org.apache.commons.lang3.builder. Using the Utils classes is generally simplicity itself. They are the equivalent of global func...
public void testToString_Object() { assertEquals("", ObjectUtils.toString(null) ); assertEquals(Boolean.TRUE.toString(), ObjectUtils.toString(Boolean.TRUE) ); } 代码示例来源:origin: org.apache.commons/commons-lang3 @Test public void testToString_ObjectString() { assertEquals(BAR, ObjectUtils.toS...
@Test public void testIdentityToStringInteger() { final Integer i = Integer.valueOf(90); final String expected = "java.lang.Integer@" + Integer.toHexString(System.identityHashCode(i)); assertEquals(expected, ObjectUtils.identityToString(i)); } origin: org.apache.commons/commons-lang3 ObjectUti...