网上有关springboot集成sap有各种各样的说法,我这里提供一个我调通的方案。如下pom配置,sapjco3.dll 放在"%java_home%\bin\",否则报nested exception is java.lang.noclassdeffounderror: could not initialize class com.sap.conn.jco.jco,服务器部署时也是这样放置,
sapjco3.dll和sapjco3.jar放在resources\lib下

<?xml version="1.0" encoding="utf-8"?>
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelversion>4.0.0</modelversion>
<parent>
<groupid>com.demo</groupid>
<artifactid>opm</artifactid>
<version>1.0-snapshot</version>
</parent>
<groupid>com.demo</groupid>
<artifactid>open-manager</artifactid>
<packaging>jar</packaging>
<name>open-manager</name>
<description>open-manager</description>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupid>com.demo</groupid>
<artifactid>common</artifactid>
<!--不加版本无法引用-->
<version>1.0-snapshot</version>
</dependency>
<dependency>
<groupid>com.sapjco3</groupid>
<artifactid>sapjco</artifactid>
<version>3.0</version>
<scope>system</scope>
<systempath>${pom.basedir}/src/main/resources/lib/sapjco3.jar</systempath>
</dependency>
<dependency>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-starter-actuator</artifactid>
</dependency>
</dependencies>
<profiles>
<!-- 本地环境 -->
<profile>
<id>local</id>
<properties>
<spring.profiles.active>local</spring.profiles.active>
</properties>
<activation>
<activebydefault>true</activebydefault>
</activation>
</profile>
<!-- 开发环境 -->
<profile>
<id>dev</id>
<properties>
<spring.profiles.active>dev</spring.profiles.active>
</properties>
</profile>
<!-- 生产环境 -->
<profile>
<id>prod</id>
<properties>
<spring.profiles.active>prod</spring.profiles.active>
</properties>
</profile>
</profiles>
<build>
<plugins>
<plugin>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-maven-plugin</artifactid>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
<configuration>
<!--为false,取消本地的system的jar打入-->
<includesystemscope>true</includesystemscope>
</configuration>
</plugin>
<plugin>
<groupid>org.apache.maven.plugins</groupid>
<artifactid>maven-resources-plugin</artifactid>
<version>3.3.0</version>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/webapp</directory>
</resource>
<resource>
<directory>src/main/resources</directory>
<!-- true表示利用占位符进行替换 -->
<filtering>true</filtering>
<includes>
<!--maven 资源过滤是为文本文件设计的(如属性文件、xml 等)-->
<include>**/*.properties</include>
<include>application.yml</include>
<!-- ${spring.profiles.active}就是我们指定的环境,会被替换掉 -->
<include>application-${spring.profiles.active}.yml</include>
<include>**/*.xml</include>
<include>**/*.html</include>
<include>**/*.json</include>
<include>webapp/</include>
</includes>
<excludes>
<!-- 排除目录 -->
<exclude>lib/**</exclude>
<exclude>**/*.jar</exclude>
<exclude>**/*.dll</exclude> <!--sapjco3.dll "%java_home%\bin\"-->
<exclude>**/*.jks</exclude>
<exclude>**/*.png</exclude>
</excludes>
</resource>
<!-- 新增:单独处理二进制文件(不进行过滤) -->
<resource>
<directory>src/main/resources/lib</directory>
<filtering>false</filtering>
<targetpath>boot-inf/lib</targetpath> <!-- 关键修改 -->
<includes>
<include>sapjco3.jar</include>
</includes>
</resource>
<!-- 处理其他资源 -->
<resource>
<directory>src/main/resources</directory>
<filtering>false</filtering>
<targetpath>boot-inf/classes</targetpath>
<excludes>
<exclude>lib/**</exclude> <!-- 排除已单独处理的 lib 目录 -->
</excludes>
<includes>
<include>**/*.jks</include>
<include>**/*.png</include>
</includes>
</resource>
</resources>
</build>
</project>package com.demo.openmanager.sap;
import com.demo.common.util.stringutils;
import com.sap.conn.jco.jcodestination;
import com.sap.conn.jco.jcodestinationmanager;
import com.sap.conn.jco.jcoexception;
import com.sap.conn.jco.ext.destinationdataprovider;
import lombok.extern.slf4j.slf4j;
import org.springframework.beans.factory.annotation.value;
import java.io.file;
import java.io.filenotfoundexception;
import java.io.fileoutputstream;
import java.io.ioexception;
import java.util.properties;
@slf4j
public class xpjco {
@value("${sap.host}")
private string sap_host;
@value("${sap.client}")
private string sap_client;
@value("${sap.sysno}")
private string sap_sys_no;
@value("${sap.user}")
private string sap_user;
@value("${sap.pass}")
private string sap_pass;
@value("${sap.lang}")
private string sap_lang;
@value("${sap.poolcapacity}")
private string sap_pool_capacity;
@value("${sap.peaklimit}")
private string sap_peak_limit;
@value("${sap.jcosaprouter}")
private string sap_jco_saprouter;
public synchronized jcodestination getjcodestination(string filename) {
jcodestination destination = null;
try {
destination = jcodestinationmanager.getdestination(filename);
} catch (jcoexception e) {
e.printstacktrace();
}
return destination;
}
private static boolean creatsappros(string filename, string host, string sysno, string client, string user, string pass,
string lang, string pool_capacity, string peak_limit, string jco_saprouter) {
properties pros = new properties();
boolean iscreate = false;
pros.clear(); // 先清空
pros.setproperty(destinationdataprovider.jco_ashost, host);
pros.setproperty(destinationdataprovider.jco_sysnr, sysno);
pros.setproperty(destinationdataprovider.jco_client, client);
pros.setproperty(destinationdataprovider.jco_user, user);
pros.setproperty(destinationdataprovider.jco_passwd, pass);
pros.setproperty(destinationdataprovider.jco_lang, lang);
pros.setproperty(destinationdataprovider.jco_pool_capacity, pool_capacity);
pros.setproperty(destinationdataprovider.jco_peak_limit, peak_limit);
if (stringutils.isnoneblank(jco_saprouter)) {
pros.setproperty(destinationdataprovider.jco_saprouter, jco_saprouter);
}
iscreate = createfiles(filename, pros);
if (iscreate) {
return true;
} else {
return false;
}
}
/**
* @param filename
* @return
*/
private static boolean isfileexist(string filename) {
file file = new file(filename + ".jcodestination");
log.info("jco path:" + file.getpath());
log.info("jco absolutepath:" + file.getabsolutepath());
// 最后会放在q:\ideawork\opm\tz02_ywk_jco.jcodestination
// 环境上是放在启动jar包所在同级目录
return file.exists();
}
/**
* @param filename
* @param pros
* @return
*/
private static boolean createfiles(string filename, properties pros) {
file file = new file(filename + ".jcodestination");
fileoutputstream fos = null;
if (!file.exists()) {
try {
log.info("********* 正在写入文件 **********");
fos = new fileoutputstream(file, false);
pros.store(fos, "author: ljb");
fos.close();
return true;
} catch (filenotfoundexception e) {
log.info("-------- 找不到文件! ---------");
e.printstacktrace();
return false;
} catch (ioexception e) {
log.info("-------- 内容写入失败! ---------");
e.printstacktrace();
return false;
} finally {
try {
fos.close();
} catch (ioexception e) {
e.printstacktrace();
}
}
} else {
return false;
}
}
public synchronized jcodestination getjcodestination() {
boolean isexist = false; // 判断文件是否存在
boolean iscreate = false; // 创建pro文件
jcodestination destination;
string filename = "tz02_ywk_jco";
isexist = xpjco.isfileexist(filename);
log.info("-- 获取jcodestination isexist==" + isexist);
if (isexist == true) {
try {
destination = jcodestinationmanager.getdestination(filename);
return destination;
} catch (jcoexception e) {
log.info("-- 获取jcodestination失敗! --");
e.printstacktrace();
return null;
}
} else {
iscreate = xpjco.creatsappros(filename, sap_host, sap_sys_no, sap_client, sap_user, sap_pass, sap_pass,
sap_pool_capacity, sap_peak_limit, sap_jco_saprouter);
if (iscreate == true) {
try {
destination = jcodestinationmanager.getdestination(filename);
log.info("获取jcodestination!成功");
return destination;
} catch (jcoexception e) {
log.info("无法获取jcodestination!");
e.printstacktrace();
return null;
}
} else { // 如果文件不存在
return null;
}
}
}
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