改进下面这段代码：try{ String isId = responseDto.getIsId(); String superTrackingCode = responseDto.getSuperTrackingCode(); ResVo<PackageEntry> packageBySuperTrackingCode = orderServerClient.getPackageBySuperTrackingCode(isId, superTrackingCode); PackageEntry data = packageBySuperTrackingCode.getData(); if(data==null){ ParamDto paramDto = new ParamDto(); paramDto.setSuperTrack(superTrackingCode); paramDto.setIsId(isId); paramDto.setBlockedCurrency(responseDto.getBlockedCurrency()); ls.add(paramDto); } }catch (Exception e){ log.warn("ex",e.getCause().getMessage()); }

if not labels: with open('labels.txt','r') as f: exec(f.read()) if not labels: print("no labels.txt") img = image.Image(size=(320, 240)) img.draw_string(90, 110, "no labels.txt", color=(255, 0, 0), scale=2) lcd.display(img) return 1 try: img = image.Image("startup.jpg") lcd.display(img) except Exception: img = image.Image(size=(320, 240)) img.draw_string(90, 110, "loading model...", color=(255, 255, 255), scale=2) lcd.display(img) try: task = None task = kpu.load("/sd/model-11975.kmodel") kpu.init_yolo2(task, 0.5, 0.3, 5, anchors) # threshold:[0,1], nms_value: [0, 1] while(True): img = sensor.snapshot() t = time.ticks_ms() objects = kpu.run_yolo2(task, img) t = time.ticks_ms() - t if objects: for obj in objects: pos = obj.rect() img.draw_rectangle(pos) img.draw_string(pos[0], pos[1], "%s : %.2f" %(labels[obj.classid()], obj.value()), scale=2, color=(255, 0, 0)) img.draw_string(0, 200, "t:%dms" %(t), scale=2, color=(255, 0, 0)) lcd.display(img) except Exception as e: raise e finally: if not task is None: kpu.deinit(task)

这段代码包含了一系列操作，用于加载模型并在传感器上运行目标检测任务。首先，代码检查是否存在labels。如果labels为空，则尝试从名为labels.txt的文件中加载标签。它使用open()函数打开文件，并使用...

public class InterfaceCallExample extends JFrame implements ActionListener { private static final long serialVersionUID = 1L; private JButton callButton; private JTable resultTable; private DefaultTableModel tableModel; public InterfaceCallExample() { super("Interface Call Example"); setSize(400, 300); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JPanel panel = new JPanel(); callButton = new JButton("查看数据"); callButton.addActionListener(this); panel.add(callButton); add(panel, BorderLayout.NORTH); tableModel = new DefaultTableModel(); tableModel.addColumn("id"); tableModel.addColumn("材料类型"); tableModel.addColumn("状态"); tableModel.addColumn("创建时间"); tableModel.addColumn("更改时间"); resultTable = new JTable(tableModel); add(new JScrollPane(resultTable), BorderLayout.CENTER); } public static void main(String[] args) { InterfaceCallExample example = new InterfaceCallExample(); example.setVisible(true); } @Override public void actionPerformed(ActionEvent e) { if (e.getSource() == callButton) { try { URL url = new URL("http://101.34.120.182:8081/wnapp/productType/getTypeId?category=1&status=0&type="); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream())); String s = reader.readLine(); JSONObject jsonObject = new JSONObject(); JSONObject object = JSONObject.parseObject(s); Object o = object.get("data"); JSONObject object1 = JSONObject.parseObject(o.toString()); ArrayList<Map<String,Object>> list = (ArrayList<Map<String,Object>>) object1.get("list"); for (Map<String,Object> map : list){ String id = map.get("id").toString(); String titleName = map.get("titleName").toString(); String status = map.get("status").toString(); String createTime = map.get("createTime").toString(); String updateTime = map.get("updateTime").toString(); ArrayList<String> strings = new ArrayList<>(); strings.add(id); strings.add(titleName); strings.add(status); strings.add(createTime); strings.add(updateTime); String[] data = strings.toString().replace("[","").replace("]","").split(","); tableModel.addRow(data); } reader.close(); } catch (Exception ex) { ex.printStackTrace(); } } } } 将以上代码获取的每条数据后面添加删除和修改的按钮

修改后的代码如下： public class InterfaceCallExample extends JFrame implements ActionListener { private static final long serialVersionUID = 1L; private JButton callButton; private JTable ...

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='__frch_entity_0.id', mode=IN, javaType=class java.lang.String, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null for parameter #1 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0). 。这个报错原因

这个错误的原因是在进行 MyBatis 参数映射时出现了问题。具体来说，可能有以下几个原因导致该错误： 1. 参数映射错误：可能是因为参数映射配置不正确或不完整导致的。请检查你的参数映射配置，确保所有参数都正确...

优化这段代码，使其点击注册按钮后能跳转至注册页面 public void register(View view){//对应注册按钮 EditText account=findViewById(R.id.account); EditText password=findViewById(R.id.password); String got_account=account.getText().toString(); String got_password=password.getText().toString(); SQLiteOpenHelper helper=MySqliteOpenHelper.getmInstance(this); SQLiteDatabase db=helper.getWritableDatabase(); if (db.isOpen()){ String sql="insert into users(_account,_password) values(?,?)";//因为注册账号和密码需要获取用户输入的信息，所以我们暂时用问号代替，下面再用Object替代 db.execSQL(sql,new Object[]{got_account,got_password}); Log.e("login success",got_account); } db.close(); }

EditText account = findViewById(R.id.account); EditText password = findViewById(R.id.password); String got_account = account.getText().toString(); String got_password = password.getText().toString...

def getMsgFromID(self, _id): reach_end = False dec_data = {} data_id = None time_stamp = 0.0 try: blf_data = next(self._blf_reader) time_stamp = blf_data.timestamp if blf_data.is_extended_id: data_id = f"{blf_data.arbitration_id:010d}" else: data_id = f"{blf_data.arbitration_id:05d}" if None == blf_data.data : pass if _id != data_id: #print(time_stamp, _id, dec_data, data_id) return dec_data, reach_end, time_stamp, _id try: dec_data = self._dbc_db.decode_message( blf_data.arbitration_id, blf_data.data) except Exception as e: reach_end = False pass except Exception as e: reach_end = True #print(time_stamp, _id, dec_data) return dec_data, reach_end, time_stamp, _id 这个接口返回的dec_data使用C++该怎么读取

这个接口返回的dec_data是一个Python字典类型，如果你要在C++中读取它，需要将它转换为C++的数据类型。你可以使用一些第三方库，例如Boost.Python或Pybind11来实现Python和C++之间的数据转换。具体地，你可以按照...

String a = "[{"id":"010003C9","IsOnline":1,"RunningDistance":17223.0}]" 怎么转化成对象 java

以下是将字符串转换为Java对象的代码示例： java import com.fasterxml.jackson.databind.ObjectMapper; public class MyClass { public static void main(String[] args) { String a = "[{\"id\":\"010003C9...

Caused by: java.lang.IllegalArgumentException: serverid is not a number

这个错误通常是因为代码中使用了一个期望是数字的值，但实际上传入的值不是数字。这可能是因为传入的值是空的或包含非数字字符。要解决这个问题，你可以检查传入的值是否为空或包含非数字字符，并进行相应的处理。...

Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: com.cloudera.impala.jdbc.Driver

根据提供的引用内容，这个错误信息表明在尝试建立JDBC连接时出现了问题。具体来说，它指出了一个嵌套的SQLException，该异常的原因是无法找到名为“com.cloudera.impala.jdbc.Driver”的驱动程序。这通常是由于缺少...

// 设置OSS访问信息 String accessKeyId = "your_access_key_id" String accessKeySecret = "your_access_key_secret" String endpoint = "your_oss_endpoint" String bucketName = "your_bucket_name" // 设置下载的文件夹路径 String ossFolder = "your_oss_folder_path" String localFolder = "your_local_folder_path" // 创建OSS客户端 def ossClient = new com.aliyun.oss.OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret) // 列出指定前缀的所有文件 def fileList = ossClient.listObjects(bucketName, ossFolder).getObjectSummaries() // 创建本地文件夹 new File(localFolder).mkdirs() // 下载文件夹中的所有文件 fileList.each { String ossFilePath = it.getKey() String localFilePath = localFolder + "/" + ossFilePath.substring(ossFolder.length() + 1) if (!it.isDirectory()) { // 下载文件 def object = ossClient.getObject(bucketName, ossFilePath) def inputStream = object.getObjectContent() def outputStream = new FileOutputStream(localFilePath) byte[] buffer = new byte[1024] int bytesRead while ((bytesRead = inputStream.read(buffer)) != -1) { outputStream.write(buffer, 0, bytesRead) } outputStream.close() inputStream.close() } }这段代码报错：isDirectory() is applicable for argument types:() values:[]

你可以在代码执行之前，检查存储桶中是否有文件，或者使用try-catch来处理这个错误。以下是一个示例代码： groovy // 列出指定前缀的所有文件 def fileList = [] try { fileList = ossClient.listObjects...

把下面代码修改为根据pushMailboxList的数量按每10条为一批多线程分批执行 pushMailboxList.stream().forEach(item -> { Township byId = townshipService.getById(item.getPushOrgid()); try { String email = byId.getEmail(); if (StrUtil.isNotBlank(email)) { String date = DateTime.now().toString(DatePattern.CHINESE_DATE_TIME_PATTERN); String content = "金平县气象局于" + date + "，发布了" + repProductContent.getReportName() + "气象服务通知，请您查收并注意做好防范工作。"; //发送邮件 MailUtil.send(email, repProductContent.getReportName(), content, false, FileUtil.file(filePath)); item.setIzEmailSuccess(1); pushMailboxList1.add(item); } else { item.setIzEmailSuccess(0); pushMailboxList1.add(item); } } catch (Exception e) { item.setIzEmailSuccess(0); pushMailboxList1.add(item); e.printStackTrace(); } });

将代码修改为根据 pushMailboxList 的数量按每 10 条为一批使用多线程分批执行的代码可能长这样: List<List<PushMailbox>> pushMailboxLists = Lists.partition(pushMailboxList, 10); for (List<PushMailbox>...

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.dao.DuplicateKeyException: ### Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Duplicate entry 'aa' for key 'username'怎么用ssm抛出这个异常，需要具体步骤和代码 @PostMapping("/saveUser") public String saveUser(User user) { int i = userService.save(user); if(i>0) { return "success"; }else { return "error"; } }

1. 首先，需要在数据库中为用户名这一列添加唯一性约束，这可以通过在创建表时添加 UNIQUE 关键字来实现，例如： sql CREATE TABLE users ( id INT PRIMARY KEY AUTO_INCREMENT, username VARCHAR(50) UNIQUE,...

package db; import java.sql.*; public class Shujuku { private static final String URL = "jdbc:mysql://localhost:3306/?db_student"; private static final String USERNAME = "root"; private static final String PASSWORD = "123456"; private static final String DRIVER_CLASS = "com.mysql.jdbc.Driver"; public void kk(){ try{ Class.forName(DRIVER_CLASS); Connection conn = DriverManager.getConnection(URL, USERNAME, PASSWORD); Statement statement=conn.createStatement(); System.out.println("已经成功连接到数据库！"); } catch (Exception e) { throw new RuntimeException(e); } }}优化

下面是优化后的代码： package db; import java.io.InputStream; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java....

public class DatabaseManage { private Context mContext = null; private SQLiteDatabase mSQLiteDatabase = null;//用于操作数据库的对象 private DatabaseHelper dh = null;//用于创建数据库的对象 private String dbName = "notepad.db"; private int dbVersion = 1; public DatabaseManage(Context context){ mContext = context; } /** * 打开数据库 */ public void open(){ try{ dh = new DatabaseHelper(mContext, dbName, null, dbVersion); if(dh == null){ Log.v("msg", "is null"); return ; } mSQLiteDatabase = dh.getWritableDatabase(); }catch(SQLiteException se){ se.printStackTrace(); } } /** * 关闭数据库 / public void close(){ mSQLiteDatabase.close(); dh.close(); } //获取列表 public Cursor selectAll(){ Cursor cursor = null; try{ String sql = "select from record"; cursor = mSQLiteDatabase.rawQuery(sql, null); }catch(Exception ex){ ex.printStackTrace(); cursor = null; } return cursor; } public Cursor selectById(int id){ Cursor cursor = null; try{ String sql = "select * from record where _id='" + id +"'"; cursor = mSQLiteDatabase.rawQuery(sql, null); }catch(Exception ex){ ex.printStackTrace(); cursor = null; } return cursor; } //插入数据 public long insert(String title, String content){ long datetime = System.currentTimeMillis(); long l = -1; try{ ContentValues cv = new ContentValues(); cv.put("title", title); cv.put("content", content); cv.put("time", datetime); l = mSQLiteDatabase.insert("record", null, cv); }catch(Exception ex){ ex.printStackTrace(); l = -1; } return l; } //删除数据 public int delete(long id){ int affect = 0; try{ affect = mSQLiteDatabase.delete("record", "_id=?", new String[]{id+""}); }catch(Exception ex){ ex.printStackTrace(); affect = -1; } return affect; } //修改数据 public int update(int id, String title, String content){ int affect = 0; try{ ContentValues cv = new ContentValues(); cv.put("title", title); cv.put("content", content); String w[] = {id+""}; affect = mSQLiteDatabase.update("record", cv, "_id=?", w); }catch(Exception ex){ ex.printStackTrace(); affect = -1; } return affect; } }这段代码的作用

这段代码是一个用于操作 SQLite 数据库的工具类。它包含了数据库的打开和关闭、查询、插入、删除和更新数据等操作。具体实现如下：在构造函数中，传入上下文信息。 open() 方法用于打开数据库，创建一个 ...

给这个方法添加单元测试： public String cloneMessage(CisMonitorData data){ log.info("Starting process to clone and publish message to queue for request id {}", data.getTdsStpId()); CisPubTds cisPubTds = monitorDao.getTdsPubRequestById(data.getTdsStpId()); if(cisPubTds == null){ return CisTStpConstants.MSG_1; } if(cisPubTds.getMessage() == null){ return CisTStpConstants.MSG_2; } if(data.getUser() == null){ return CisTStpConstants.MSG_18; } if(data.getComment() != null && data.getComment().length() > 250){ return CisTStpConstants.MSG_19; } String status = null; try { CisPubTds clonePubTds = (CisPubTds)cisPubTds.clone(); clonePubTds.setTdsStpId(null); clonePubTds.setCreatedDate(new Date()); clonePubTds.setCreatedBy(data.getUser()); clonePubTds.setIsStpEd(0); clonePubTds.setStpEdAt(null); clonePubTds.setUserComment(data.getComment()); clonePubTds = monitorDao.saveOrUpdatePubTds(clonePubTds); if(clonePubTds != null && clonePubTds.getTdsStpId() != null && clonePubTds.getTdsStpId() > 0) { log.info("Updating the XML message for cloned request with new TDS STP id : {}", clonePubTds.getTdsStpId()); /Update tracking ID in SCBML message and save it to database/ Document doc = DocumentUtility.StringToDocument(clonePubTds.getMessage()); DocumentUtility.updateNodeValue(doc, clonePubTds.getTdsStpId()); String updatedXml = DocumentUtility.DocumentToString(doc); clonePubTds.setMessage(updatedXml); clonePubTds = monitorDao.saveOrUpdatePubTds(clonePubTds); /End/ log.info("Update of the XML message for cloned request with new TDS STP id : {} is completed", clonePubTds.getTdsStpId()); log.info("Publishing the cloned message"); boolean statusBool = publish(clonePubTds); if(statusBool){ status = CisTStpConstants.MSG_SUCCESS; } log.info("End of publish with statusBool : {}", statusBool); log.info("End of publish with status : {}", status); }else { status = CisTStpConstants.MSG_8; } log.info("End process to clone and publish message to queue for request id {}", data.getTdsStpId()); } catch (CloneNotSupportedException e) { status = CisTStpConstants.MSG_7; log.error("Error while cloning the object {}", e); } catch (Exception e) { log.error("Error while creating object {}", e); } return status; }

String result = exampleClass.cloneMessage(data); // Assert assertEquals(CisTStpConstants.MSG_SUCCESS, result); } } In this example, we are using Mockito to mock the MonitorDao object. We ...

public static String request(String httpUrl, String httpArg) { BufferedReader reader = null; String result = null; StringBuffer sbf = new StringBuffer(); httpUrl = httpUrl + "?" + httpArg; try { URL url = new URL(httpUrl); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("POST"); // 填入apikey到HTTP header connection.setRequestProperty("apikey", " ************"); connection.connect(); InputStream is = connection.getInputStream(); reader = new BufferedReader(new InputStreamReader(is, "UTF-8")); String strRead = null; while ((strRead = reader.readLine()) != null) { sbf.append(strRead); sbf.append("\r\n"); } reader.close(); result = sbf.toString(); } catch (Exception e) { e.printStackTrace(); } return result; }

但是，这段代码存在一些问题： 1. httpUrl 和 httpArg 直接拼组件和两个Button组件： xml android:id="@+id/editTextWord" android:layout接成 URL，容易被攻击者利用 URL 注入漏洞进行攻击。建议使用 ...

* 查看 / public List browseMer(int pageSize, int pageNo, int cateId,boolean isSpecial) throws Exception { Session session = MySessionFactory.getSession(); Transaction tx = null; List list = null; try{ String hql = "from Merchandise as a"; if (isSpecial){ hql = hql + " where a.special=1"; }else{ hql = hql + " where a.special=0"; } if (cateId!=0){ hql = hql + " and a.category.id="+cateId; } hql = hql + " order by a.id desc"; Query query = session.createQuery(hql); query.setMaxResults(pageSize); query.setFirstResult((pageNo-1)pageSize); tx = session.beginTransaction(); list = query.list(); tx.commit(); if (!Hibernate.isInitialized(list))Hibernate.initialize(list); }catch(Exception ex){ if(tx!=null)tx.rollback(); logger.info("MerServiceImpl browseMer异常?\n"); ex.printStackTrace(); }finally{ MySessionFactory.closeSession(); } return list; } public List browseMer(int pageSize, int pageNo, String hql) throws Exception { Session session = MySessionFactory.getSession(); Transaction tx = null; List list = null; try{ Query query = session.createQuery(hql); query.setMaxResults(pageSize); query.setFirstResult((pageNo-1)*pageSize); tx = session.beginTransaction(); list = query.list(); tx.commit(); if (!Hibernate.isInitialized(list))Hibernate.initialize(list); }catch(Exception ex){ if(tx!=null)tx.rollback(); logger.info("MerServiceImpl browseMer异常?\n"); ex.printStackTrace(); }finally{ MySessionFactory.closeSession(); } return list; } public int countRecord(String hql) throws Exception { Session session = MySessionFactory.getSession(); Transaction tx = null; int count = 0; try{ tx = session.beginTransaction(); Query query = session.createQuery(hql); query.setMaxResults(1); count = ((Integer)query.uniqueResult()).intValue(); tx.commit(); }catch(Exception ex){ if(tx!=null)tx.rollback(); logger.info("MerServiceImpl countRecord异常?\n"); ex.printStackTrace(); }finally{ MySessionFactory.closeSession(); } return count; }

这段代码实现了浏览商品的功能，其中 browseMer 方法分为两个重载版本，一个是根据商品分类和是否特价进行查询，另一个是根据自定义的 HQL 语句进行查询。countRecord 方法用于计算符合条件的记录数量。具体来...

相关推荐

android：AsyncTask实现异步处理任务.pdf

java实验报告：实验六.doc

hls.min.js

String a = "[{"id":"010003C9","IsOnline":1,"RunningDistance":17223.0}]" 怎么转化成对象 java

Caused by: java.lang.IllegalArgumentException: serverid is not a number

Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: com.cloudera.impala.jdbc.Driver

最新推荐

Python与Java间Socket通信实例代码

BSC绩效考核指标汇总 (2).docx

管理建模和仿真的文件

【进阶】Flask中的会话与用户管理

卷积神经网络实现手势识别程序

BSC资料.pdf

"互动学习：行动中的多样性与论文攻读经历"

【进阶】Flask中的请求处理

transformer模型对话

BSC绩效考核指标汇总 (3).pdf