1、下载需要的jar,windows用dll,linux用so
2、环境：
windows -> sapjco3.dll放到windows目录下
linux -> libsapjco3.so 放到lib目录下(没权限就建个环境变量让后放进去)
3、代码：
1 package cn.com.sony.newsis.common.tools; 2 3 import java.io.File; 4 import java.io.FileOutputStream; 5 import java.text.SimpleDateFormat; 6 import java.util.Date; 7 import java.util.List; 8 import java.util.Properties; 9 import java.util.concurrent.ConcurrentHashMap; 10 11 import cn.com.sony.npc.util.Props.PropsUtil; 12 13 import com.sap.conn.jco.AbapException; 14 import com.sap.conn.jco.JCo; 15 import com.sap.conn.jco.JCoDestination; 16 import com.sap.conn.jco.JCoDestinationManager; 17 import com.sap.conn.jco.JCoException; 18 import com.sap.conn.jco.JCoFunction; 19 import com.sap.conn.jco.JCoParameterList; 20 import com.sap.conn.jco.ext.DestinationDataProvider; 21 22 23 public class AUJcoClient 24 { 25 static String ABAP_AS_POOLED = "AU_AS_WITH_POOL"; 26 static String[] jcoPara=Operate.getAUJcoPara(); 27 static int timeOut=Integer.parseInt(jcoPara[8]); 28 public static int FUNCTIONCOUNT=0; 29 public static long FOLLOWCOUNT=0; 30 public static int PEAK_LIMIT=Integer.parseInt(jcoPara[7]); 31 32 public static ConcurrentHashMap<Long,Long> hm=new ConcurrentHashMap<Long,Long>(); 33 34 35 /** 36 * initial JCO connection 37 */ 38 static{ 39 for(int i=0;i<jcoPara.length;i++){ 40 System.out.print(jcoPara[i]+","); 41 } 42 Properties connectProperties = new Properties(); 43 connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST, jcoPara[0]); 44 connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR, jcoPara[1]); 45 connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT, jcoPara[2]); 46 connectProperties.setProperty(DestinationDataProvider.JCO_USER, jcoPara[3]); 47 connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD, jcoPara[4]); 48 connectProperties.setProperty(DestinationDataProvider.JCO_LANG, jcoPara[5]); 49 connectProperties.setProperty(DestinationDataProvider.JCO_POOL_CAPACITY, jcoPara[6]); 50 connectProperties.setProperty(DestinationDataProvider.JCO_PEAK_LIMIT, jcoPara[7]); 51 52 createDataFile(ABAP_AS_POOLED, "jcoDestination", connectProperties); 53 54 } 55 56 static void createDataFile(String name, String suffix, Properties properties){ 57 File cfg = new File(name+"."+suffix); 58 if(!cfg.exists()){ 59 FileOutputStream fos = null; 60 try{ 61 fos = new FileOutputStream(cfg, false); 62 properties.store(fos, "for tests only !"); 63 }catch (Exception e){ 64 //Point 4 – handle this exception 65 throw new RuntimeException("Unable to create the destination file " + cfg.getName(), e); 66 }finally{ 67 try{ 68 if(fos!=null) fos.close(); 69 }catch(Exception e){ 70 e.printStackTrace(); 71 } 72 } 73 } 74 } 75 76 /** 77 * access JCO Interface 'Z_CREDIT_EXPOSURE' 78 * @param customerAccountNumber 79 * @param companyCode 80 * @param creditControlArea 81 * @param dateCreditExposure 82 * @return 83 * @throws JCoException 84 */ 85 public static String[] functionCallcreditExposure(String customerAccountNumber,String companyCode,String creditControlArea,String dateCreditExposure) throws Exception{ 86 String[] res = new String[3]; 87 String creditLimit = null; 88 String Receivable = null; 89 String creditExposure = null; 90 try{ 91 JCoDestination destination = JCoDestinationManager.getDestination(ABAP_AS_POOLED); 92 JCoFunction function = destination.getRepository().getFunction("Z_CREDIT_EXPOSURE"); 93 JCoParameterList inParm = function.getImportParameterList(); 94 inParm.setValue("KUNNR", "4002485"); 95 inParm.setValue("BUKRS", "AU40"); 96 inParm.setValue("KKBER","AU40"); 97 inParm.setValue("DATE_CREDIT_EXPOSURE","99991231"); 98 FUNCTIONCOUNT++; 99 function.execute(destination); 100 FOLLOWCOUNT++; 101 if(FOLLOWCOUNT>100000) FOLLOWCOUNT=0; 102 hm.put(new Long(FOLLOWCOUNT), new Date().getTime()/1000); 103 creditExposure = function.getExportParameterList().getString("SUM_OPENS").toString(); 104 Receivable = function.getExportParameterList().getString("OPEN_ITEMS").toString(); 105 creditLimit = function.getExportParameterList().getString("CREDITLIMIT").toString(); 106 res[0] = creditExposure; 107 res[1] = Receivable; 108 res[2] = creditLimit; 109 }catch (JCoException e) { 110 throw e; 111 }finally{ 112 FUNCTIONCOUNT--; 113 } 114 return res; 115 } 116 117 /** 118 * access JCO Interface 'Y_RFC_AP_ACC_GETKEYDATEBALANC' 119 * @param material String 120 * @param req_qty String 121 * @param customer String 122 * @return String part status 123 */ 124 public static String functionCallGetBalance(String vendorAccountNumber,String companyCode,String dateCreditExposure) throws Exception{ 125 String vendorBalance = null; 126 try{ 127 JCoDestination destination = JCoDestinationManager.getDestination(ABAP_AS_POOLED); 128 JCoFunction function = destination.getRepository().getFunction("Y_RFC_AP_ACC_GETKEYDATEBALANC"); 129 JCoParameterList inParm = function.getImportParameterList(); 130 inParm.setValue("VENDOR", vendorAccountNumber); 131 inParm.setValue("COMPANYCODE", companyCode); 132 inParm.setValue("KEYDATE",dateCreditExposure); 133 FUNCTIONCOUNT++; 134 function.execute(destination); 135 FOLLOWCOUNT++; 136 if(FOLLOWCOUNT>100000) FOLLOWCOUNT=0; 137 hm.put(new Long(FOLLOWCOUNT), new Date().getTime()/1000); 138 vendorBalance = function.getExportParameterList().getString("LC_BAL").toString(); 139 } catch(AbapException e) { 140 System.out.println(e.toString()); 141 }finally{ 142 FUNCTIONCOUNT--; 143 } 144 return vendorBalance; 145 } 146 147 /** 148 * Control Maximum concurrency 149 * @param material String 150 * @param req_qty String 151 * @param customer String 152 *@return part status 153 */ 154 public static Object functionControlGetBalance(String VendoraccountNumber,String CompanyCode,String DateCreditExposure) throws Exception { 155 156 String status=null; 157 Object partStat=null; 158 Date d1=null; 159 Date d2=null; 160 String path= PropsUtil.get("JCO_ROOT"); 161 try{ 162 /* 163 * WAS的自动重启机制会产生"Library is already loaded in another ClassLoader"的bug，必须黑屏重启jvm 164 * Java虚拟机为了在JNI本地库中确保基于classloader的命名空间隔离，因而不允许一个JNI本地库被两个不同的classloader加载。 165 * 只要将JNI class单独发布成jar包，并放在配置公共(default、all或share)的lib目录中，问题就可以解决 166 */ 167 JCo.setTrace(0, path); 168 }catch (Exception e) { 169 System.err.println("Jco loader error:"+e); 170 } 171 172 LayOut lo=new LayOut(path+"/AUJcoPrint.log"); 173 174 SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 175 SimpleDateFormat sdf2=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS"); 176 StringBuffer sb=new StringBuffer(""); 177 178 try{ 179 sb.append(sdf2.format(new Date())).append(" ").append("VendoraccountNumber:") 180 .append(VendoraccountNumber).append(" ").append("CompanyCode:").append(CompanyCode) 181 .append(" ").append("DateCreditExposure:").append(DateCreditExposure).append(" "); 182 int i=0; 183 //最大并发量PEAK_LIMIT，超时timeOut秒 184 while(FUNCTIONCOUNT>PEAK_LIMIT && i<timeOut){ 185 Thread.sleep(1000); 186 i++; 187 } 188 if(FUNCTIONCOUNT<PEAK_LIMIT){ 189 d1=new Date(); 190 //访问JCO接口 191 partStat=functionCallGetBalance(VendoraccountNumber,CompanyCode,DateCreditExposure); 192 if(partStat==null){ 193 partStat="sku not exist"; 194 } 195 d2=new Date(); 196 status="OK"; 197 }else{ 198 status="reached the maximum number of JCO_PEAK_LIMIT"; 199 partStat="timeout"; 200 System.err.println(FUNCTIONCOUNT+" "+new Date().toLocaleString()); 201 } 202 // } 203 }catch(Exception e){ 204 //连接失败异常 205 status=e.getMessage(); 206 e.printStackTrace(); 207 }finally{ 208 StringBuffer sb2=new StringBuffer(""); 209 long responseTime=-1; 210 if(d1!=null&&d2!=null) responseTime=d2.getTime()-d1.getTime(); 211 sb2.append(sdf2.format(new Date())).append(" ").append("ExecID:") 212 .append(FOLLOWCOUNT).append(" ").append("InvocationTime:") 213 .append(d1==null?"null":sdf.format(d1)).append(" ").append("ResponseReceivedTime:") 214 .append(d2==null?"null":sdf.format(d2)).append(" ") 215 .append("TotalTimeTaken:").append(responseTime).append(" ") 216 .append("Status:").append(status); 217 lo.writeFile(sb.append(sb2).toString()); 218 } 219 return partStat; 220 } 221 222 /* public static void main(String[] args){ 223 try{ 224 System.out.println("=======AUbegin============="); 225 String xx = functionCallGetBalance("A1053905A","1","1000053"); 226 String[] res = functionCallcreditExposure("632","AU40","AU40","99991231"); 227 System.out.println("======end==============:"); 228 }catch(Exception e){ 229 e.printStackTrace(); 230 } 231 }*/ 232 }