java.lang.NumberFormatException: For input string: "2182,192.168.182.130:2183"

前言：

运行Dubbo的provider的时候，报错：

java.lang.NumberFormatException: For input string: "2182,192.168.182.130:2183"

注：当你的控制台或者日志出现java.lang.NumberFormatException时，第一时间就是字符串转换成数字类型出现的问题。可能为String转Long、Integer时，因为某些情况导致报java.lang.NumberFormatException异常。

具体异常信息：

java.lang.NumberFormatException: For input string: "2182,192.168.182.130:2183"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) ~[na:1.8.0_191]
	at java.lang.Integer.parseInt(Integer.java:580) ~[na:1.8.0_191]
	at java.lang.Integer.parseInt(Integer.java:615) ~[na:1.8.0_191]
	at com.alibaba.dubbo.common.URL.valueOf(URL.java:239) ~[dubbo-2.6.2.jar:2.6.2]
	at com.alibaba.dubbo.common.utils.UrlUtils.parseURL(UrlUtils.java:68) ~[dubbo-2.6.2.jar:2.6.2]
	at com.alibaba.dubbo.common.utils.UrlUtils.parseURLs(UrlUtils.java:137) ~[dubbo-2.6.2.jar:2.6.2]
	at com.alibaba.dubbo.config.AbstractInterfaceConfig.loadRegistries(AbstractInterfaceConfig.java:190) ~[dubbo-2.6.2.jar:2.6.2]
	at com.alibaba.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:356) ~[dubbo-2.6.2.jar:2.6.2]
	at com.alibaba.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:317) ~[dubbo-2.6.2.jar:2.6.2]
	at com.alibaba.dubbo.config.ServiceConfig.export(ServiceConfig.java:216) ~[dubbo-2.6.2.jar:2.6.2]
	at com.alibaba.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:123) ~[dubbo-2.6.2.jar:2.6.2]
	at com.alibaba.dubbo.config.spring.ServiceBean.onApplicationEvent(ServiceBean.java:49) ~[dubbo-2.6.2.jar:2.6.2]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:897) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:162) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:553) ~[spring-context-5.2.3.RELEASE.jar:5.2.3.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.4.RELEASE.jar:2.2.4.RELEASE]
	at com.jt.SpringBoot_Run.main(SpringBoot_Run.java:13) [classes/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_191]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_191]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_191]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_191]
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.2.4.RELEASE.jar:2.2.4.RELEASE]

2020-02-26 23:58:59.150  INFO 9056 --- [  restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'applicationTaskExecutor'
2020-02-26 23:58:59.156  INFO

转换异常：

一、可能问题：
1、前端在传给我id时，本来该传"1"（字符串形式的数字1），结果传的是"New"，这时候，如果后台处理参数时，调用Long.ValueOf(String)或者Long.parseLong(String)方法进行数据类型转换，就会报异常。
原因：在调用Long.ValueOf(String)或者Long.parseLong(String)方法进行数据类型转换时，字符串内不能包含除数字之外的字符。

2.还有字符串的长度也应该有限制，否则也会报异常，字符串形式的数字不能超过19位，因位Long类型的最大值位Long.MAX_VALUE = 9223372036854775807，大于这个值都会出错。

二、解决方案：

1、前端规范入参，对参数进行校验，或者在后台入参时进行参数校验。

三、补充知识：

1、在java中String转换为Int主要有两种方法 Integer.parseInt(s) 和Integer.valueOf(s).intValue()，情况和字符串转Long一样，都需要注意类似的格式，否则都会出现java.lang.NumberFormatException。

2.对于要进行转换的字符串有如下要求：
当你输入为字母时，也就是内容不是数字时，如dada
当你输入为空时
当你输入超出数字类型上限时

配置异常：（本文原因）

主要是因为zookeeper的address配置错误：
异常：
修正：

在zookeeper的学习中可能会遇到很多问题！如有其他异常请留言！！