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这期内容当中小编将会给大家带来有关如何将S/4HANA系统存储的图片文件用Java程序保存到本地，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。
我在S/4HANA的事务码MM02里为Material维护图片文件作为附件：
通过如下简单的ABAP代码即可将图片文件的二进制内容读取出来：
REPORT zgos_api. DATA ls_appl_object TYPE gos_s_obj. DATA lo_gos_api TYPE REF TO cl_gos_api. DATA lt_attachment_list TYPE gos_t_atta. DATA lt_role_filter TYPE gos_t_rol. DATA: lv_id TYPE matnr VALUE '16', lt_att TYPE TABLE OF sibflporb. CALL FUNCTION 'CONVERSION_EXIT_MATN1_INPUT' EXPORTING input = lv_id IMPORTING output = lv_id. ls_appl_object-typeid = 'BUS1001006'. ls_appl_object-instid = lv_id. ls_appl_object-catid = 'BO'. START-OF-SELECTION. TRY. lo_gos_api = cl_gos_api=>create_instance( ls_appl_object ). APPEND cl_gos_api=>c_attachment TO lt_role_filter. lt_attachment_list = lo_gos_api->get_atta_list( lt_role_filter ). CATCH cx_gos_api INTO DATA(error). WRITE:/ error->get_text( ). RETURN. ENDTRY. DATA: ls_key TYPE gos_s_attkey, lv_base64 type string. LOOP AT lt_attachment_list ASSIGNING FIELD-SYMBOL(). ls_key-atta_id = -atta_id. ls_key-atta_cat = -atta_cat. DATA(ls) = lo_gos_api->get_al_item( ls_key ). BREAK-POINT. ENDLOOP.
然后我把这段代码封装到一个Function moduleZDIS_GET_MATERIAL_IMAGES里，在Java代码里消费这个function module，把S/4HANA返回的二进制内容存成本地图片文件。在ABAP系统里图片二进制文件内容的类型为RAWSTRING，如何在Java里使用它？
使用JCO在Java里消费ABAP function module的代码：
static private void getProductImageTest(){
JCoDestination destination = null; try {
destination = JCoDestinationManager.getDestination(DESTINATION_NAME);
JCoRepository repo = destination.getRepository();
JCoFunction stfcConnection = repo.getFunction("ZDIS_GET_MATERIAL_IMAGES");
JCoParameterList imports = stfcConnection.getImportParameterList();
String materialID = "16";
imports.setValue("IV_MATERIAL_ID", materialID);
stfcConnection.execute(destination);
JCoParameterList exports = stfcConnection.getExportParameterList(); int abapDuration = exports.getInt("EV_DURATION");
StringBuilder sb = new StringBuilder();
sb.append("{ \"" + ABAP_DURATION + "\": " + abapDuration + ",");
sb.append("\"" + UPSELL_PRODUCT + "\":[");
JCoTable codes = exports.getTable("ET_IMAGES"); int row = codes.getNumRows();
System.out.println("Total rows: " + row);
System.out.println("ABAP duration: " + abapDuration); for( int i = 0; i < row; i++){
codes.setRow(i);
sb.append("{\"" + FILE_ID + "\":" + codes.getString("FILEID") + "," + "\"" + FILE_OWNER + "\":\"" + codes.getString("OWNER") + "\"" + ",");
sb.append("{\"" + FILE_CDATE + "\":" + codes.getString("CREATION_DATE") + "," + "\"" + FILE_NAME + "\":\"" + codes.getString("FILENAME") + "\"");
storeLocalFile(codes); if( i < row - 1){
sb.append("},");
} else{
sb.append("}");
}
}
sb.append("]}");
System.out.println("Final json: " + sb.toString());
} catch (JCoException e) { // TODO Auto-generated catch block e.printStackTrace();
}
}其中把ABAP的类型为RAWSTRING的字段保存成本地文件的代码封装于方法storeLocalFile里：
static private void storeLocalFile(JCoTable codes){
InputStream is = codes.getBinaryStream("FILECONTENT"); try {
File file = new File("c:\\temp\\" + codes.getString("FILENAME")); byte[] bytes = new byte[is.available()];
is.read(bytes);
OutputStream output = new FileOutputStream(file);
BufferedOutputStream bufferedOutput = new BufferedOutputStream(output);
bufferedOutput.write(bytes);
bufferedOutput.close();
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}执行Java代码后，在本地C盘temp目录下能够看到S/4HANA里Material ID为16的两个附件图片：
上述就是小编为大家分享的如何将S/4HANA系统存储的图片文件用Java程序保存到本地了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注创新互联-成都网站建设公司行业资讯频道。