使用Mybatis遇到的thereisnogetter异常

public interface Pro1_Mapper {

  Pro1_Studnet insertStu(Pro1_Studnet pro1_studnet);

}

public class Pro1_Studnet {

  private String stuId;

  private String stuName;

  private String stuClass;

  private String stuTeacher;

  public String getStuId() {
    return stuId;
  }

  public void setStuId(String stuId) {
    this.stuId = stuId;
  }

  public String getStuName() {
    return stuName;
  }

  public void setStuName(String stuName) {
    this.stuName = stuName;
  }

  public String getStuClass() {
    return stuClass;
  }

  public void setStuClass(String stuClass) {
    this.stuClass = stuClass;
  }

  public String getStuTeacher() {
    return stuTeacher;
  }

  public void setStuTeacher(String stuTeacher) {
    this.stuTeacher = stuTeacher;
  }
}

public static void main(String[] args) {
    Logger logger = null;
    logger = Logger.getLogger(Pro1_Main.class.getName());
    logger.setLevel(Level.DEBUG);
    SqlSession sqlSession = null;
    try {
      sqlSession = study.mybatis.MybatisUtil.getSqlSessionFActory().openSession();
      Pro1_Mapper pro1_Mapper = sqlSession.getMapper(Pro1_Mapper.class);
      Pro1_Studnet pro1_studnet =new Pro1_Studnet();
      pro1_studnet.setStuName("张三");
      Pro1_Studnet pro1_studnet1 =pro1_Mapper.insertStu(pro1_studnet);
      System.out.println(pro1_studnet1.getStuClass());
      sqlSession.commit();
    } finally {
      sqlSession.close();
    }
  }

<&＃63;xml version="1.0" encoding="utf-8"&＃63;>


  
    
    
    
    
  
  
    SELECT * from pro_1stu where stu_name = #{pro1_studnet.stuName};
  

@Override
 public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
  try {
   if (Object.class.equals(method.getDeclaringClass())) {
    return method.invoke(this, args);
   } else if (isDefaultMethod(method)) {
    return invokeDefaultMethod(proxy, method, args);
   }
  } catch (Throwable t) {
   throw ExceptionUtil.unwrapThrowable(t);
  }
  final MapperMethod mapperMethod = cachedMapperMethod(method);
  return mapperMethod.execute(sqlSession, args);
 }

public Object execute(SqlSession sqlSession, Object[] args) {
  //省略无关代码
   case SELECT:
    if (method.returnsVoid() && method.hasResultHandler()) {
     executeWithResultHandler(sqlSession, args);
     result = null;
    } else if (method.returnsMany()) {
     result = executeForMany(sqlSession, args);
    } else if (method.returnsMap()) {
     result = executeForMap(sqlSession, args);
    } else if (method.returnsCursor()) {
     result = executeForCursor(sqlSession, args);
    } else {
     Object param = method.convertArgsToSqlCommandParam(args);
     result = sqlSession.selectOne(command.getName(), param);
    }
    break;
   case FLUSH:
    result = sqlSession.flushStatements();
    break;
   default:
    throw new BindingException("Unknown execution method for: " + command.getName());
  }
  if (result == null && method.getReturnType().isPrimitive() && !method.returnsVoid()) {
   throw new BindingException("Mapper method '" + command.getName() 
     + " attempted to return null from a method with a primitive return type (" + method.getReturnType() + ").");
  }
  return result;
 }

public Object getNamedParams(Object[] args) {
  final int paramCount = names.size();
  if (args == null || paramCount == 0) {
   return null;
  } else if (!hasParamAnnotation && paramCount == 1) {
   return args[names.firstKey()];
  } else {
   final Map param = new ParamMap();
   int i = 0;
   for (Map.Entry entry : names.entrySet()) {
    param.put(entry.getValue(), args[entry.getKey()]);
    // add generic param names (param1, param2, ...)
    final String genericParamName = GENERIC_NAME_PREFIX + String.valueOf(i + 1);
    // ensure not to overwrite parameter named with @Param
    if (!names.containsValue(genericParamName)) {
     param.put(genericParamName, args[entry.getKey()]);
    }
    i++;
   }
   return param;
  }
 }

@Override
 public CacheKey createCacheKey(MappedStatement ms, Object parameterObject, RowBounds rowBounds, BoundSql boundSql) {
  if (closed) {
   throw new ExecutorException("Executor was closed.");
  }
  CacheKey cacheKey = new CacheKey();
  cacheKey.update(ms.getId());
  cacheKey.update(rowBounds.getOffset());
  cacheKey.update(rowBounds.getLimit());
  cacheKey.update(boundSql.getSql());
  List parameterMappings = boundSql.getParameterMappings();
  TypeHandlerRegistry typeHandlerRegistry = ms.getConfiguration().getTypeHandlerRegistry();
  // mimic DefaultParameterHandler logic
  for (ParameterMapping parameterMapping : parameterMappings) {
   if (parameterMapping.getMode() != ParameterMode.OUT) {
    Object value;
    String propertyName = parameterMapping.getProperty();
    if (boundSql.hasAdditionalParameter(propertyName)) {
     value = boundSql.getAdditionalParameter(propertyName);
    } else if (parameterObject == null) {
     value = null;
    } else if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
     value = parameterObject;
    } else {
     MetaObject metaObject = configuration.newMetaObject(parameterObject);
     value = metaObject.getValue(propertyName);
    }
    cacheKey.update(value);
   }
  }
  if (configuration.getEnvironment() != null) {
   // issue #176
   cacheKey.update(configuration.getEnvironment().getId());
  }
  return cacheKey;
 }

@Override
 public Reflector findForClass(Class<&＃63;> type) {
  if (classCacheEnabled) {
      // synchronized (type) removed see issue #461
   Reflector cached = reflectorMap.get(type);
   if (cached == null) {
    cached = new Reflector(type);
    reflectorMap.put(type, cached);
   }
   return cached;
  } else {
   return new Reflector(type);
  }
 }

 public Object getValue(String name) {
  PropertyTokenizer prop = new PropertyTokenizer(name);
  if (prop.hasNext()) {
   MetaObject metaValue = metaObjectForProperty(prop.getIndexedName());
   if (metaValue == SystemMetaObject.NULL_META_OBJECT) {
    return null;
   } else {
    return metaValue.getValue(prop.getChildren());
   }
  } else {
   return objectWrapper.get(prop);
  }
 }

public Invoker getGetInvoker(String propertyName) {
  Invoker method = getMethods.get(propertyName);
  if (method == null) {
   throw new ReflectionException("There is no getter for property named '" + propertyName + "' in '" + type + "'");
  }
  return method;
 }

 @Override
 public Object get(PropertyTokenizer prop) {
  if (prop.getIndex() != null) {
   Object collection = resolveCollection(prop, map);
   return getCollectionValue(prop, collection);
  } else {
   return map.get(prop.getName());
  }
 }