HttpClient之Post接口代码范例

核心包：

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

一：接收数据

json数据格式如下：

1、单一对象型：

a、数据格式

b、接口java（核心）代码范例

    @ResponseBody
    @RequestMapping(value = "/specialtyOA2DMS.do", method = RequestMethod.POST)
    public JSONObject specialtyOA2DMS(@RequestBody JSONObject jsonObject, HttpServletRequest request)
            throws GenericBusinessException {
        JSONObject return_json = new JSONObject();

        try {
            //校验入参
            if (StringTool.isEmpty(jsonObject.toString())) {
                return_json.put("RESULT_STATUS", "F");
                return_json.put("RESULT_REASON", "入参错误");

                return return_json;
            }
            //校验入参单头不能为空
            if(StringTool.isEmpty(jsonObject.getString("APPLY_DATE")) || StringTool.isEmpty(jsonObject.getString("OA_FORM_NO")) || StringTool.isEmpty(jsonObject.getString("SPECIALTY_LINE"))){
                return_json.put("RESULT_STATUS", "F");
                return_json.put("RESULT_REASON", "入参必填项存在空值(OA_FORM_NO-OA流程单号；APPLY_DATE-申请日期)");

                return return_json;
            } else {
                String oaFormNoc = (String)jsonObject.getString("OA_FORM_NO");//OA流程单号

                //校验入参单身数据
                JSONArray specialtyLine = jsonObject.getJSONArray("SPECIALTY_LINE");
                if(null != specialtyLine && specialtyLine.size()>0){
                    for(Object object : specialtyLine){
                        JSONObject obj = (JSONObject)object;
                        String sapContractNo = (String)obj.getString("SAP_CONTRACT_NO");//SAP合同编号
                        String prodCode = (String)obj.getString("SPECIALTY_PROD_CODE");//特制品编码
                        String unit = (String)obj.getString("SPECIALTY_PROD_UNIT");//单位
                        String qty = (String)obj.getString("SPECIALTY_PROD_QTY");//数量
                        //必填不能为空
                        if(StringTool.isEmpty(sapContractNo) || StringTool.isEmpty(prodCode) || StringTool.isEmpty(unit) || StringTool.isEmpty(qty)){
                            return_json.put("RESULT_STATUS", "F");
                            return_json.put("RESULT_REASON", "入参必填项存在空值(SAP_CONTRACT_NO-SAP合同编号/SPECIALTY_PROD_CODE-特制品编码/SPECIALTY_PROD_UNIT-单位/SPECIALTY_PROD_QTY-申请数量)");

                            return return_json;
                        }

                    }
                return_json.put("RESULT_STATUS", "S");
                return_json.put("RESULT_REASON", "成功");
                return return_json;
                } else {
                    return_json.put("RESULT_STATUS", "F");
                    return_json.put("RESULT_REASON", "入参错误");

                    return return_json;
                }
            }

        } catch(Exception e){
            return_json.put("RESULT_STATUS", "F");
                        return_json.put("RESULT_REASON", "入参错误");
            return return_json;
        }

        return return_json;
    }

2、对象对象数组型：

a、数据格式

b、接口java（核心）代码范例

    @ResponseBody
    @RequestMapping(value = "/specialtySAP2DMS.do", method = RequestMethod.POST)
    public JSONObject specialtySAP2DMS(@RequestBody JSONObject[] jsonObject, HttpServletRequest request)
            throws GenericBusinessException {
        JSONObject return_json = new JSONObject();
        SapImportData sapData = new SapImportData();
        List<SpecialtyProduct> specialtyProductList = new ArrayList<SpecialtyProduct>();

        try {
            //校验入参
            if(null != jsonObject && (jsonObject.length)>0){
                for(JSONObject jsonObj : jsonObject){
                    SpecialtyProduct specialtyProduct = new SpecialtyProduct();
                    String prodCode = "";//物料编号
                    String prodDesc = "";//物料描述
                    String prodFlag = "";//标识
                    String prodRemark = "";//说明
                    String prodIscontr = "";//是否进行数量管控
                    if(StringTool.isEmpty(jsonObj.getString("PROD_CODE"))){
                        return_json.put("RESULT_STATUS", "F");
                        return_json.put("RESULT_REASON", "入参必填项存在空值(PROD_CODE-物料编号)");
                        this.sapLog(sapData, "", "参数为空", "入参必填项存在空值(PROD_CODE-物料编号)","specialtySAP2DMS.do");
                        return return_json;
                    } else {
                        prodCode = (String)jsonObj.getString("PROD_CODE");//物料编号
                        if(StringTool.isNotEmpty(jsonObj.getString("PROD_DESC"))){
                            prodDesc = (String)jsonObj.getString("PROD_DESC");
                        }
                        if(StringTool.isNotEmpty(jsonObj.getString("PROD_FLAG"))){
                            prodFlag = (String)jsonObj.getString("PROD_FLAG");
                        }
                        if(StringTool.isNotEmpty(jsonObj.getString("PROD_REMARK"))){
                            prodRemark = (String)jsonObj.getString("PROD_REMARK");
                        }
                        if(StringTool.isNotEmpty(jsonObj.getString("PROD_ISCONTR"))){
                            prodIscontr = (String)jsonObj.getString("PROD_ISCONTR");
                        }
                        specialtyProduct.setProdCode(prodCode);
                        specialtyProduct.setProdDesc(prodDesc);
                        specialtyProduct.setProdFlag(prodFlag);
                        specialtyProduct.setProdRemark(prodRemark);
                        specialtyProduct.setProdIscontr(prodIscontr);
                        //处理开始时间和结束时间
                        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                        format.setTimeZone(TimeZone.getTimeZone("GMT+8"));
                        Calendar c = Calendar.getInstance();
                        Timestamp ct = new Timestamp(c.getTimeInMillis());//创建时间
                        specialtyProduct.setCreatedDate(ct);

                        //通用字段
                        specialtyProduct.setCreatorId(1l);
                        specialtyProduct.setCreatorName("admin");
                        specialtyProduct.setModiDate(ct);
                        specialtyProduct.setModifierId(1l);
                        specialtyProduct.setModifierName("admin");
                        specialtyProduct.setDataSource("SAP汇入");
                        specialtyProduct.setOwnerId(1l);
                        //添加到List集合中批量保存
                        specialtyProductList.add(specialtyProduct);
                    }
                }

                return_json.put("RESULT_STATUS", "S");

                return_json.put("RESULT_REASON", "成功");
                return return_json;

            } else {
                return_json.put("RESULT_STATUS", "F");
                return_json.put("RESULT_REASON", "入参错误");

                return return_json;
            }

        } catch(Exception e){
            return_json.put("RESULT_STATUS", "F");

            return_json.put("RESULT_REASON", "接口处理错误");
            return return_json;
        }

    }

二：传输数据到接口

a、数据格式

或

b、接口java（核心）代码范例

    @SuppressWarnings("unchecked")
    @Override
    public String AIReturnHttpPost(List<Object>  ObjectList)throws GenericBusinessException{
        String resultStr = "";
        String entityJson = JSON.toJSONString(ObjectList);
        String url = "";//填自己要调接口的路径
        HttpClient client = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(url);
        StringEntity entity = new StringEntity(entityJson, "utf-8");
        entity.setContentEncoding("UTF-8");
        entity.setContentType("application/json");
        httppost.setEntity(entity);
        Character statusWL = new Character('F');
        String message = "";

        try {
            HttpResponse result = client.execute(httppost);
            String resData = EntityUtils.toString(result.getEntity(), "utf-8");
            if(StringTool.isNotEmpty(resData)){
                JSONObject jobg = JSON.parseObject(resData);
                if(StringTool.isNotEmpty(jobg.get("code"))){
                    String code = jobg.get("code").toString();

                    if(StringTool.isNotEmpty(jobg.get("message"))){
                        message = jobg.get("message").toString();
                    }
                    if("200".equals(code)){
                        statusWL = new Character('T');
                    } else {
                        statusWL = new Character('F');
                    }
                    resultStr = resultStr+code+"-"+message;
                }
            }

        } catch (Exception e) {
            message = "处理接口异常";
            e.printStackTrace();
        }

        return resultStr;
    }