{"date": "2023-06-05 16:19:48.743", "traceId": "faba03a649d007df", "level": "ERROR", "logger": "org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/contract].[dispatcherServlet]", "msg": "Servlet.service() for servlet [dispatcherServlet] in context with path [/contract] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause"} java.lang.NullPointerException: null at java.base/java.util.Objects.requireNonNull(Objects.java:221) 报错原因String path = new FileTxtHandleUtil().projectSource("./template/excel");
时间: 2023-11-21 20:53:08 浏览: 37
根据你给出的信息,这段错误信息表明在一个名为dispatcherServlet的servlet中处理请求时,出现了NullPointerException异常。具体来说,是在调用Objects.requireNonNull方法时出现了异常。该方法是Java 8中的一个工具方法,用于检查传入的对象是否为null,如果是null,则抛出一个NullPointerException异常。在这个异常中,它指出了出现异常的代码行,即String path = new FileTxtHandleUtil().projectSource("./template/excel");这一行。也就是说,可能是在调用FileTxtHandleUtil类的projectSource方法时,传入了一个null值,导致出现了异常。需要检查代码中是否存在这样的问题。
相关问题
使用go输出以下代码return [ //今日头条 self::JRTT => [ 'app_id' => '1637582127666189', 'secret' => '9bbc8bcd1e69ad94f60c4e54cdf00a3fc94dcfee', ], //广点通 self::GDT => [ 'client_id' => '1111634984', 'client_secret' => 'SiXqfD0Q4o1Ooe1z', ], //快手 self::KS => [ 'app_id' => '165898200', 'secret' => '2!R1%c#v-*430q#r', ], //VIVO self::VIVO => [ 'app_id' => '20220721003', 'secret' => '9E2F68912F47DD294F477BFC247B5A8D18CAA251D91D4FABA4FB40D05B860E6B', ], ];
以下是使用Go语言输出代码的示例:
```
package main
import "fmt"
func main() {
fmt.Println("return [")
fmt.Println(" //今日头条")
fmt.Println(" self::JRTT => [")
fmt.Println(" 'app_id' => '1637582127666189',")
fmt.Println(" 'secret' => '9bbc8bcd1e69ad94f60c4e54cdf00a3fc94dcfee',")
fmt.Println(" ],")
fmt.Println(" //广点通")
fmt.Println(" self::GDT => [")
fmt.Println(" 'client_id' => '1111634984',")
fmt.Println(" 'client_secret' => 'SiXqfD0Q4o1Ooe1z',")
fmt.Println(" ],")
fmt.Println(" //快手")
fmt.Println(" self::KS => [")
fmt.Println(" 'app_id' => '165898200',")
fmt.Println(" 'secret' => '2!R1%c#v-*430q#r',")
fmt.Println(" ],")
fmt.Println(" //VIVO")
fmt.Println(" self::VIVO => [")
fmt.Println(" 'app_id' => '20220721003',")
fmt.Println(" 'secret' => '9E2F68912F47DD294F477BFC247B5A8D18CAA251D91D4FABA4FB40D05B860E6B',")
fmt.Println(" ],")
fmt.Println("];")
}
```
输出结果为:
```
return [
//今日头条
self::JRTT => [
'app_id' => '1637582127666189',
'secret' => '9bbc8bcd1e69ad94f60c4e54cdf00a3fc94dcfee',
],
//广点通
self::GDT => [
'client_id' => '1111634984',
'client_secret' => 'SiXqfD0Q4o1Ooe1z',
],
//快手
self::KS => [
'app_id' => '165898200',
'secret' => '2!R1%c#v-*430q#r',
],
//VIVO
self::VIVO => [
'app_id' => '20220721003',
'secret' => '9E2F68912F47DD294F477BFC247B5A8D18CAA251D91D4FABA4FB40D05B860E6B',
],
];
```
如何查看ElasticSearch版本
要查看Elasticsearch的版本,可以使用以下两种方法:
1. 通过命令行界面查看版本:在命令行中进入Elasticsearch的安装目录,然后输入以下命令:
```
bin/elasticsearch -V
```
运行该命令后,Elasticsearch将显示其版本信息,例如:
```
Version: 7.8.0, Build: default/deb/d757387f2b6dcac1000d7f238ca2faba055e7fdc/2020-06-14T19:35:50.234439Z, JVM: 14.0.1
```
这里显示的版本号为7.8.0。
2. 通过REST API查看版本:使用任何HTTP客户端(如curl、Postman等)向Elasticsearch的根URL发送GET请求,例如:
```
GET /
```
Elasticsearch将返回其版本信息,例如:
```
{
"name" : "node-1",
"cluster_name" : "my_cluster",
"cluster_uuid" : "x8K3WgjxQFm9TXxJ8i52zg",
"version" : {
"number" : "7.8.0",
"build_flavor" : "default",
"build_type" : "deb",
"build_hash" : "757314695644ea9a1dc2fecd26d1a43856725e65",
"build_date" : "2020-06-14T19:35:50.234439Z",
"build_snapshot" : false,
"lucene_version" : "8.5.1",
"minimum_wire_compatibility_version" : "6.8.0",
"minimum_index_compatibility_version" : "6.0.0-beta1"
},
"tagline" : "You Know, for Search"
}
```
这里显示的版本号为7.8.0。