java系统库不加载opencv库 [英] The java system library do not load opencv library

问题描述

我在java项目中使用了opencv库。我有一个简单的java项目，编译为'jar'，并手动添加opencv库，那么我知道我不得不把这个代码放在任何东西之后：

System.loadLibrary（Core.NATIVE_LIBRARY_NAME）;

这样做很好，但现在我需要应用程序在服务器上运行，所以我做了一个maven简单的项目，在war中编译，并在依赖关系中添加了opencv，但是在上面的行中我得到这个错误。

 导致：java.lang.UnsatisfiedLinkError：否java.library.path中的opencv_java249 
  

我想这是真的，因为是一个maven依赖。
我如何解决这个问题？

这是我的pom.xml

 < project xmlns =http://maven.apache.org/POM/4.0.0xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
 xsi：schemaLocation =http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd\"> 
< modelVersion> 4.0.0< / modelVersion> 
< groupId> org.springframework.samples< / groupId> 
< artifactId> RetinoblastomappSpring< / artifactId> 
< version> 0.0.1-SNAPSHOT< / version> 
< packaging> war< / packaging> 
< description> Tesis de diagnico temprano视网膜母细胞瘤< / description> 
 
< properties> 
 
<！ - 通用属性 - > 
< java.version> 1.8< / java.version> 
< project.build.sourceEncoding> UTF-8< /project.build.sourceEncoding> 
< project.reporting.outputEncoding> UTF-8< /project.reporting.outputEncoding> 
 
<！ -  Spring  - > 
< spring-framework.version> 3.2.3.RELEASE< /spring-framework.version> 
 
<！ -  Hibernate / JPA  - > 
< hibernate.version> 4.2.1.Final< / hibernate.version> 
 
<！ - 记录 - > 
< logback.version> 1.0.13< /logback.version> 
< slf4j.version> 1.7.5< /slf4j.version> 
 
<！ - 测试 - > 
< junit.version> 4.11< / junit.version> 
 
<！ -  OpenCV  - > 
< opencv.version> 2.4.9-4< /opencv.version> 
 
< / properties> 
 
<依赖关系> 
<！ -  Spring和事务 - > 
<依赖关系> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-context< / artifactId> 
< version> $ {spring-framework.version}< / version> 
< / dependency> 
<依赖关系> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-tx< / artifactId> 
< version> $ {spring-framework.version}< / version> 
< / dependency> 
 
<！ - 使用SLF4J& LogBack  - > 
<依赖关系> 
< groupId> org.slf4j< / groupId> 
< artifactId> slf4j-api< / artifactId> 
< version> $ {slf4j.version}< / version> 
< scope> compile< / scope> 
< / dependency> 
<依赖关系> 
< groupId> ch.qos.logback< / groupId> 
< artifactId> logback-classic< / artifactId> 
< version> $ {logback.version}< / version> 
< scope>运行时< / scope> 
< / dependency> 
 
<！ -  Hibernate  - > 
<依赖关系> 
< groupId> org.hibernate< / groupId> 
< artifactId> hibernate-entitymanager< / artifactId> 
< version> $ {hibernate.version}< / version> 
< / dependency> 
 
 
<！ - 测试工件 - > 
<依赖关系> 
< groupId> org.springframework< / groupId> 
< artifactId> spring-test< / artifactId> 
< version> $ {spring-framework.version}< / version> 
< scope> test< / scope> 
< / dependency> 
<依赖关系> 
< groupId> junit< / groupId> 
< artifactId> junit< / artifactId> 
< version> $ {junit.version}< / version> 
< scope> test< / scope> 
< / dependency> 
 
<！ -  OpenCV  - > 
<依赖关系> 
< groupId> nu.pattern< / groupId> 
< artifactId> opencv< / artifactId> 
< version> $ {opencv.version}< / version> 
< / dependency> 
 
<依赖关系> 
< groupId> org.codehaus.mojo< / groupId> 
< artifactId> exec-maven-plugin< / artifactId> 
< version> 1.4.0< / version> 
< / dependency> 
 
 
 
< / dependencies> 
< build> 
< plugins> 
< plugin> 
< groupId> org.apache.maven.plugins< / groupId> 
< artifactId> maven-compiler-plugin< / artifactId> 
< version> 3.3< / version> 
< configuration> 
< source> 1.8< / source> 
< target> 1.8< / target> 
< / configuration> 
< / plugin> 
< / plugins> 
< / build> 
  

strong>

我手动添加了库，并且是一样的，战争正在编译OK，但是当我执行它，该行失败，我得到相同的错误

我看到我必须向我的系统变量添加opencv，但没有工作

解决方案

您可以解决此问题，将文件opencv_java249.dll添加到文件夹java / bin /（已安装java的位置）

< （是的，这是我的答案，因为我想帮助有同样事情的人）

I'm using the opencv library in a java project. I have a simple java project that compiles as a 'jar', and manually adding the opencv library, then, I know that I have to put this code after nothing:

System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

This works well, but now, I need the same application running in a server, so I made a maven simple project that compiles in a 'war' and added opencv in a dependency, but in the line above I get this error.

Caused by: java.lang.UnsatisfiedLinkError: no opencv_java249 in java.library.path

And I guess it is true because is a maven dependency. How I fix this?

Here is my pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.springframework.samples</groupId>
<artifactId>RetinoblastomappSpring</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<description>Tesis de diagnostico temprano retinoblastoma</description>

<properties>

    <!-- Generic properties -->
    <java.version>1.8</java.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

    <!-- Spring -->
    <spring-framework.version>3.2.3.RELEASE</spring-framework.version>

    <!-- Hibernate / JPA -->
    <hibernate.version>4.2.1.Final</hibernate.version>

    <!-- Logging -->
    <logback.version>1.0.13</logback.version>
    <slf4j.version>1.7.5</slf4j.version>

    <!-- Test -->
    <junit.version>4.11</junit.version>

    <!-- OpenCV -->
    <opencv.version>2.4.9-4</opencv.version>

</properties>

<dependencies>
    <!-- Spring and Transactions -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring-framework.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>${spring-framework.version}</version>
    </dependency>

    <!-- Logging with SLF4J & LogBack -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>${slf4j.version}</version>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>${logback.version}</version>
        <scope>runtime</scope>
    </dependency>

    <!-- Hibernate -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>${hibernate.version}</version>
    </dependency>


    <!-- Test Artifacts -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring-framework.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>${junit.version}</version>
        <scope>test</scope>
    </dependency>

    <!-- OpenCV -->
    <dependency>
        <groupId>nu.pattern</groupId>
        <artifactId>opencv</artifactId>
        <version>${opencv.version}</version>
    </dependency>

    <dependency>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>exec-maven-plugin</artifactId>
        <version>1.4.0</version>
    </dependency>



</dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.3</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
    </plugins>
</build>

UPDATE

I added the library by hand, and is the same, The war is compiling OK, but when I execute it, that line fails and I get the same error.

I read that I have to add opencv to my system variables, but that didn't work

解决方案

You can solve this issue adding the file "opencv_java249.dll" to the folder java/bin/ (where you have installed java)

(yes this is an answer to me, because I want to help somebody that has troubles on the same thing)

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