Maven项目打包时,如果遇到需要添加本地jar包依赖的时候,可以选择两种方法: 1. 安装到本地仓库 第一种方法比较常规,适用于需要添加的jar包也是由maven项目导出,含有pom文件的时候。只需要将jar包安装到本地maven仓库下,然后添加依赖即可。 (1)安装到本地仓库,执行以下命令(其中的-Dfile/-DgroupId/-DartifactId/-Dversion项根据pom文件内容填写):
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mvn install:install-file -Dfile=xxxxx.jar -DgroupId=xxx.xxx.xxx -DartifactId=xxxxx -Dversion=1.0.0 -Dpackaging=jar |
(2)安装之后可以在本地仓库中找到对应的jar包。然后将对应的依赖信息插入到工程的pom文件即可:
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<dependency> <groupId>xxx.xxx.xxx</groupId> <artifactId>xxxxx</artifactId> <version>1.0.0</version> </dependency> |
2. dependency中指定scope="system"和本地jar包路径 这种方法适用于其他方式导出的jar包,jar包中不含有pom信息,从而无法安装进本地仓库的情况。做法是:先配置本地jar包依赖,然后在build时将设置将jar包导出,同时配置manifest。 (1)配置本地jar包依赖(systemPath指向本地jar包路径):
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<dependency> <groupId>com.amazonaws</groupId> <artifactId>aws-java-sdk-s3</artifactId> <version>1.11.0</version> <scope>system</scope> <systemPath>${project.basedir}/lib/xxx.jar</systemPath> </dependency> |
(2)在<build>的spring-boot-maven-plugin中设置将本地jar包导出到项目最终的依赖库中:
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<plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <includeSystemScope>true</includeSystemScope> </configuration> </plugin> |
(3)如果项目使用maven-jar-plugin插件打包的话,还需要在manifectEntries中添加对应的jar包信息;否则虽然jar包导出了,但是项目生成的MANIFEST.MF文件中没有对应的依赖信息,也会导致运行时找不到对应的class。
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<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <archive> <manifest> <addClasspath>true</addClasspath> <classpathPrefix>lib/</classpathPrefix> <mainClass>XXXX</mainClass> </manifest> <manifestEntries> <Class-Path>./ lib/xxxxx.jar</Class-Path> </manifestEntries> </archive> <outputDirectory> ${project.build.directory}/XXXXX </outputDirectory> </configuration> </plugin> |
(4)最后附上一个项目完整的<build>配置(该配置可以将最终生成的jar包和依赖库、配置文件分开)。
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<build> <finalName>XXXXX</finalName> <sourceDirectory>src/main/java</sourceDirectory> <resources> <resource> <directory>src/main/resources</directory> <targetPath>${project.build.directory}/XXXXX</targetPath> <excludes> <exclude>**/*.java</exclude> </excludes> </resource> </resources> <testSourceDirectory>src/test/java</testSourceDirectory> <testResources> <testResource> <directory>src/test/resources</directory> <filtering>true</filtering> <excludes> <exclude>**/*.java</exclude> </excludes> </testResource> </testResources> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <includeSystemScope>true</includeSystemScope> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId> <configuration> <skipTests>true</skipTests> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <executions> <execution> <id>copy-dependencies</id> <phase>package</phase> <goals> <goal>copy-dependencies</goal> </goals> <configuration> <outputDirectory> ${project.build.directory}XXXXX/lib </outputDirectory> </configuration> </execution> </executions> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <archive> <manifest> <addClasspath>true</addClasspath> <classpathPrefix>lib/</classpathPrefix> <mainClass>xxx.xxx.XXXXX</mainClass> </manifest> <manifestEntries> <Class-Path>./ lib/xxxxx.jar</Class-Path> </manifestEntries> </archive> <outputDirectory> ${project.build.directory}/XXXXX </outputDirectory> </configuration> </plugin> </plugins> </build> |
from:https://www.cnblogs.com/strugglion/p/12513956.html
View Detailslt:less than 小于 le:less than or equal to 小于等于 eq:equal to 等于 ne:not equal to 不等于 ge:greater than or equal to 大于等于 gt:greater than 大于 from:https://blog.csdn.net/Radiation_ONE/article/details/108425074
View Details public void groupingByCity() {
Map
map.forEach((k, v) -> {
System.out.println(k + " = " + v);
});
}
注意:idea2021.2及以上版本
快捷键 ctrl+shift+alt+/ 热部署找不到compile.automake.allow.when.app.running
目前已经被idea官方更新到setting里面设置
具体设置位置
file->setting->Advanced Setttings里面了
@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",timezone = "GMT+8")
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//HttpServletRequest 对象通过以下方法来获取请求路径,如下所示: String serverName = request.getServerName();//获取服务器名,127.0.0.1; int serverPort = request.getServerPort();//获取服务器端口号,8083; String contextPath = request.getContextPath();//获取项目名,/Aop; String ServletPath=request.getServletPath();//获取Servlet路径,/getUserDetails/45; String QueryString=request.getQueryString();//获取参数部分,即问号后面的部分:username=zhangsan StringBuffer RequestURL=request.getRequestURL();//获取请求URL,等于不包含参数的整个请求路径:http://localhost:8083/Aop/getUserDetails/45 String RemoteAddr=request.getRemoteAddr();//获取服务器的IP,如localhost对应ip为127.0. |
from:https://www.cnblogs.com/zhoading/p/13954370.html
View Details // 指定文件或文件夹的路径
Path path = Paths.get("path/to/your/file_or_directory");
// 检查路径是否存在,并且是一个文件(不是文件夹)
boolean isFile = Files.exists(path, LinkOption.NOFOLLOW_LINKS) && Files.isRegularFile(path);
// 检查路径是否存在,并且是一个文件夹(不是文件)
boolean isDirectory = Files.exists(path, LinkOption.NOFOLLOW_LINKS) && Files.isDirectory(path);
* * 设置浏览器打开文件所采用的编码
* response.setHeader("Content-Type", "text/html;charset=UTF-8");
* * 简写方式
* response.setContentType("text/html;charset=UTF-8");
URL url = new URL(strUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(5 * 1000);
InputStream inStream = conn.getInputStream();// 通过输入流获取图片数据
byte[] btImg = readInputStream(inStream);// 得到图片的二进制数据
return btImg;
@GetMapping("/image/{filename}")
public ResponseEntity
File file = new File(filename);
byte[] imageBytes = ImageUtils.getImageBytes(file);
ByteArrayResource resource = new ByteArrayResource(imageBytes);
return ResponseEntity.ok()
.contentType(MediaType.IMAGE_JPEG)
.contentLength(imageBytes.length)
.body(resource);
}