花费了一段时间，终于学会了利用rxtx完成java应用程序与JavaWeb的串口调试工具。分享下必用的jar与dll工具。首先确定使用的JDK是否和jar对应，（1）将rxtxSerial.dll、rxtxParallel.dll复制到\jre\bin目录下；（2）将RXTXcomm.jar复制到\jre\lib\ext目录下；（3）到eclipse中右击项目》构建路径》配置构建路径 》添加外部jar》选择上一步复制后的RXTXcomm.jar。

windows64位串口开发用到的rxtxParallel.dll和rxtxSerial.dll还有Java中要用到的RXTXcomm.jar；还有配置说明

32位和64位的rxtxParallel.dll和rxtxSerial.dll

RXTX for Java Java Linux Windows Fork of the Java RXTX project to primarily provide a compiled native 64-bit package for Windows and Linux. RXTX is a Java native library providing serial and parallel communication for the Java Development Toolkit (JDK). RXTX is licensed under the GNU LGPL license as well as these binary distributions. RXTX is a great package, but it was lacking pre-built binaries for x64 (64-bit) versions of Windows. This project distributes binary builds of RXTX for Windows x64, x86, ia64 and Linux x86, x86_64. These builds are compiled with the latest Microsoft Visual Studio tools. The latest CVS snapshots of RXTX were much better and more stable than the versions on the official rxtx.org website. Therefore, builds for Linux are also included to be consistent with the Windows binaries.

编写JAVA串口程序用rxtxParallel+rxtxSerial（32位和64位）

32位 rxtxParallel.dll、rxtxSerial.dll、RXTXcomm.jar下载

java开发串口工具所需资源，适用于64位。解压后，将文件拷贝到JAVA_HOME/jre/bin下

windows64位缺少rxtxParallel.dll和rxtxSerial.dll这两个文件，将该文件复制到对应安装JAVA_HOME下的jre下的bin目录里面就可以了。

void Init():初始化(只调用一次) int WINAPI CommOpen(int comno,int baud,int devType): 打开串口 comno 串口号 baud 波特率 devType 保留参数(值为2) 返回值: 0 为失败 1为成功 int WINAPI CommClose(int comno):关闭串口 comno 串口号 返回值: 0 为失败 1为成功 int WINAPI SendMsg(int comno,char* phone,char* message):发送短信 comno 串口号 phone 手机号 message 短信内容 返回值: 0 为失败 1为成功 int WINAPI RecvMsg(int comno,char* xml):接收短信 comno 串口号 xml 接收短信内容(XML格式) 返回值: 0 为失败 1为成功

rxtxSerial.dll