stream 相关问题

假设我有以下对象列表公共类员工{ 私有字符串 emplId；私人姓名名称；私人字符串部门；私人字符串城市； } 并且有列表假设我有以下对象列表 public class Employee { private String emplId; private Name name; private String dept; private String city; } 并且有 List<Employee> empLst = Arrays.asList( new Employee("1", "henry", "10", "Boston"), new Employee("2", "Foster", "10", "san jose"), new Employee("3", "Rick", "10", "sfo"), new Employee("4", "Ban", "20", "Boston"), new Employee("5", "Zen", "20", "Ale"), new Employee("6", "Ken", "30", "sfo") ); 如何实现接受员工对象并过滤与查询对象值匹配的列表的搜索 GetEmplList(new Employee().setCity("Boston")) which returns both #1 and #4 employees where as GetEmplList(new Employee().setCity("Boston").setDept("20")) returns only #4 employee GetEmplList(new Employee().setName("Ken")) returns only #6 employees empLst.stream() .filter(e -> e.getCity().equalsIgnoreCase("Boston")) .forEach(e -> System.out.println(e.getName())); 不想要像上面编译时过滤器那样的东西` 您需要一个 Predicate 将元素与提供的“示例”相匹配。示例中为 null 的属性应视为匹配。 public class MatchByExample implements Predicate<Employee> { private final Employee example; public MatchByExample(Employee example) { this.example = example; } @Override public boolean test(Employee employee) { return match(example.getEmplId(), employee.getEmplId()) && match(example.getCity(), employee.getCity()) && match(example.getName(), employee.getName()) && match(example.getDept(), employee.getDept()); } private static boolean match(Object exampleProperty, Object propertyToTest) { if (exampleProperty == null) { //property not provided in example return true; } return exampleProperty.equals(propertyToTest); } } 用途： Employee example = new Employee(null, null, "20", "Boston"); List<Employee> filteredResult = empLst.stream() .filter(new MatchByExample(example)) .toList(); System.out.println(filteredResult); //prints the employee with id 4

java filter stream

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如何实现像过滤java对象流这样的运行时查询

假设我有以下对象列表公共类员工{ 私有字符串 emplId；私人姓名名称；私人字符串部门；私人字符串城市； } 并且有列表假设我有以下对象列表 public class Employee { private String emplId; private Name name; private String dept; private String city; } 并且有 List<Employee> empLst = Arrays.asList( new Employee("1", "henry", "10", "Boston"), new Employee("2", "Foster", "10", "san jose"), new Employee("3", "Rick", "10", "sfo"), new Employee("4", "Ban", "20", "Boston"), new Employee("5", "Zen", "20", "Ale"), new Employee("6", "Ken", "30", "sfo") ); 如何实现接受员工对象并过滤与查询对象值匹配的列表的搜索 GetEmplList(new Employee().setCity("Boston")) which returns both #1 and #4 employees where as GetEmplList(new Employee().setCity("Boston").setDept("20")) returns only #4 employee GetEmplList(new Employee().setName("Ken")) returns only #6 employees empLst.stream() .filter(e -> e.getCity().equalsIgnoreCase("Boston")) .forEach(e -> System.out.println(e.getName())); 不想要像上面编译时过滤器那样的东西` 您需要一个 Predicate 将元素与提供的“示例”相匹配。示例中为 null 的属性应视为匹配。 public class MatchByExample implements Predicate<Employee> { private final Employee example; public MatchByExample(Employee example) { this.example = example; } @Override public boolean test(Employee employee) { return match(example.getEmplId(), employee.getEmplId()) && match(example.getCity(), employee.getCity()) && match(example.getName(), employee.getName()) && match(example.getDept(), employee.getDept()); } private static boolean match(Object exampleProperty, Object propertyToTest) { if (exampleProperty == null) { //property not provided in example return true; } return exampleProperty.equals(propertyToTest); } } 用途： Employee example = //create the example to match by List<Employee> filteredResult = empLst.stream() .filter(new MatchByExample(example)) .toList(); System.out.println(filteredResult);

java filter stream

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将文件保存到 GCS 在 Next.js 生产版本中不起作用

这些是我正在使用的模块。 “@google-cloud/storage”：“^7.7.0” “下一个”：“14.1.0” 这是代码。 “使用服务器”；从“@

typescript stream upload google-cloud-storage next.js14

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我有遵循 archunit 规则的应用程序，我得到： NO_CLASSES_SHOULD_ACCESS_STANDARD_STREAMS 规则失败 - 这意味着我无法使用标准 Java I/O 流。但我可以用什么来代替呢？我怎样才能

java stream archunit

回答 2 投票 0

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我的页面上有一个打开 PDF 文件的链接，该文件在 IE11 下工作正常，但 Firefox 给我一个“损坏的内容错误”，Chrome 给我一个“从服务器收到的重复标头”错误。 js...