在centos6安装java串口通讯组件RXTX，centos6rxtx

在centos6安装java串口通讯组件RXTX，centos6rxtx

1.查询java的jdk目录：

（1）判断是否安装了java 及大致路径 使用指令：whereis java

输出：java: /usr/bin/java /etc/java /usr/lib/java /usr/share/java /usr/share/man/man1/java.1.gz

(2) 查询java的版本  使用指令   java -version

输出：

java version "1.7.0_75"
OpenJDK Runtime Environment (rhel-2.5.4.0.el6_6-i386 u75-b13)
OpenJDK Server VM (build 24.75-b04, mixed mode)

(3)判断jdk的路径 find /usr -name *1.7.0.75*
/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.75
/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.75/tapset/hotspot_gc-1.7.0.75-2.5.4.0.el6_6.stp
/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.75/tapset/hotspot-1.7.0.75-2.5.4.0.el6_6.stp
/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.75/tapset/hotspot_jni-1.7.0.75-2.5.4.0.el6_6.stp
/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.75/tapset/jstack-1.7.0.75-2.5.4.0.el6_6.stp
/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.75
/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.75/jndi-ldap-1.7.0.75.jar
/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.75/jndi-rmi-1.7.0.75.jar
/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.75/jndi-1.7.0.75.jar
/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.75/jdbc-stdext-1.7.0.75.jar
/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.75/jsse-1.7.0.75.jar
/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.75/jndi-cos-1.7.0.75.jar
/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.75/jaas-1.7.0.75.jar
/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.75/sasl-1.7.0.75.jar
/usr/lib/jvm-exports/java-1.7.0-openjdk-1.7.0.75/jce-1.7.0.75.jar
/usr/share/systemtap/tapset/i386/hotspot_gc-1.7.0.75-2.5.4.0.el6_6.stp
/usr/share/systemtap/tapset/i386/hotspot-1.7.0.75-2.5.4.0.el6_6.stp
/usr/share/systemtap/tapset/i386/hotspot_jni-1.7.0.75-2.5.4.0.el6_6.stp
/usr/share/systemtap/tapset/i386/jstack-1.7.0.75-2.5.4.0.el6_6.stp

由此可以知道jdk目录是/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.75

(4)假设我们已经把jdk目录命名为$JAVA_HOME

把下载的组件中librxtxParallel.so 和librxtxSerial.so拷贝至/usr/lib下

把RXTXcomm.jar拷贝至$JAVA_HOME/jre/lib/ext下

注：该组件下载地址：http://rxtx.qbang.org/pub/rxtx/rxtx-2.2pre2-bins.zip。

如果 使用过程中提示 该类的访问受限，请参考http://blog.csdn.net/u010486124/article/details/27978209