Java 如何在 Spring boot 中设置 UTF-8 字符编码？
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How to set UTF-8 character encoding in Spring boot?
提问by Laurence
I use spring-boot in my project, and I run this jar file which is built by spring-boot as a service on Centos. When I run this service:
我在我的项目中使用 spring-boot，我运行这个由 spring-boot 构建的 jar 文件作为 Centos 上的服务。当我运行此服务时：
service myApp start
服务 myApp 启动
I always get the below error messages:
我总是收到以下错误消息：
2016-08-26 09:11:02.002 ERROR 31900 --- [ main] o.s.b.c.FileEncodingApplicationListener : System property 'file.encoding' is currently 'ANSI_X3.4-1968'. It should be 'UTF-8' (as defined in 'spring.mandatoryFileEncoding').
2016-08-26 09:11:02.018 ERROR 31900 --- [ main] o.s.b.c.FileEncodingApplicationListener : Environment variable LANG is 'null'. You could use a locale setting that matches encoding='UTF-8'.
2016-08-26 09:11:02.018 ERROR 31900 --- [ main] o.s.b.c.FileEncodingApplicationListener : Environment variable LC_ALL is 'null'. You could use a locale setting that matches encoding='UTF-8'.
2016-08-26 09:11:02.031 ERROR 31900 --- [ main] o.s.boot.SpringApplication : Application startup failed
java.lang.IllegalStateException: The Java Virtual Machine has not been configured to use the desired default character encoding (UTF-8).
at org.springframework.boot.context.FileEncodingApplicationListener.onApplicationEvent(FileEncodingApplicationListener.java:74) ~[spring-boot-1.3.7.RELEASE.jar!/:1.3.7.RELEASE]
If I run this jar file directly, then this application runs properly.
如果我直接运行这个 jar 文件，那么这个应用程序运行正常。
java -jar target/myApp-1.0.jar
java -jar 目标/myApp-1.0.jar
. ____ _ __ _ _
/\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.3.7.RELEASE)
......
2016-08-26 09:54:34.954 DEBUG 32035 --- [ main] o.s.w.s.resource.ResourceUrlProvider : Found resource handler mapping: URL pattern="/**", locations=[ServletContext resource [/], class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/]], resolvers=[org.springframework.web.servlet.resource.PathResourceResolver@1817d444]
2016-08-26 09:54:35.051 INFO 32035 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8000 (http)
2016-08-26 09:54:35.053 DEBUG 32035 --- [ main] o.s.w.c.s.StandardServletEnvironment : Adding [server.ports] PropertySource with highest search precedence
2016-08-26 09:54:35.061 INFO 32035 --- [ main] co.nz.myApplication : Started myApplication in 12.339 seconds (JVM running for 13.183)
This is pom.xml:
这是 pom.xml：
<project>
....
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.7.RELEASE</version>
<relativePath/>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>
....
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<executable>true</executable>
<jvmArguments>-Dfile.encoding=UTF8 -Dspring.profiles.active="production"</jvmArguments>
</configuration>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
<version>1.2.5.RELEASE</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
application.properties:
应用程序属性：
....
spring.mandatory-file-encoding=UTF-8
spring.http.encoding.charset=UTF-8
spring.http.encoding.enabled=true
....
locale setting on Centos:
Centos 上的语言环境设置：
$ locale
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=en_US.UTF-8
I check all files setting as possible as I do, however I still have no idea how to solve this problem. I would appreciate if you can give me any suggestion.
我尽可能检查所有文件设置，但是我仍然不知道如何解决这个问题。如果您能给我任何建议，我将不胜感激。
回答by Dominik Koszkul
The first line tells you that you should set system property 'file.encoding'. I think that's the problem. Please see: Setting the default Java character encoding?
第一行告诉您应该设置系统属性“file.encoding”。我认为这就是问题所在。请参阅：设置默认 Java 字符编码？
回答by Laurence
Finally I found a way so that I can launch Spring-boot project properly.
最后我找到了一种方法，以便我可以正确启动 Spring-boot 项目。
The solution is use sudo /etc/init.d/myApp startinstead of service myApp start
解决方案是使用sudo /etc/init.d/myApp start而不是service myApp start
回答by Krzysztof Szewczyk
SOLUTION
解决方案
Add to config file (for application /var/app/app.jarit will be /var/app/app.conf) below line:
添加到配置文件（对于应用程序/var/app/app.jar，它将是/var/app/app.conf）以下行：
export LANG='en_US.UTF-8'
CAUSE
原因
The problem is in linux systemd(service). I tested it with script /etc/init.d/test:
问题出在 linux systemd( service) 中。我用脚本测试了它/etc/init.d/test：
#/bin/bash
locale
result of command $ /etc/init.d/test:
命令的结果$ /etc/init.d/test：
LANG=en_US.UTF-8
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=
and result of command $ service test:
和命令的结果$ service test：
LANG=
LC_CTYPE="POSIX"
LC_NUMERIC="POSIX"
LC_TIME="POSIX"
LC_COLLATE="POSIX"
LC_MONETARY="POSIX"
LC_MESSAGES="POSIX"
LC_PAPER="POSIX"
LC_NAME="POSIX"
LC_ADDRESS="POSIX"
LC_TELEPHONE="POSIX"
LC_MEASUREMENT="POSIX"
LC_IDENTIFICATION="POSIX"
LC_ALL=
In spring boot jar file is build-in systemd script and before running spring boot is executed among others:
在 spring boot jar 文件中是内置的 systemd 脚本，并且在运行 spring boot 之前执行以下操作：
# Source any config file
configfile="$(basename "${jarfile%.*}.conf")"
# Initialize CONF_FOLDER location defaulting to jarfolder
[[ -z "$CONF_FOLDER" ]] && CONF_FOLDER="${jarfolder}"
# shellcheck source=/dev/null
[[ -r "${CONF_FOLDER}/${configfile}" ]] && source "${CONF_FOLDER}/${configfile}"
回答by Michail Michailidis
Based on my answer here: https://stackoverflow.com/a/48952844/986160you need to run:
根据我在这里的回答：https: //stackoverflow.com/a/48952844/986160你需要运行：
mvn spring-boot:run -Drun.jvmArguments="-Dfile.encoding=UTF-8"
