Zhentiw - 博客园

2020年12月20日

[CSS3] Apply Image Filter Effects With CSS

摘要： Apply a grayscale and blurred effect on an image without the use of graphics software by using the CSS filter property. Additionally, use an inset box 阅读全文

posted @ 2020-12-20 21:28 Zhentiw 阅读(116) 评论(0) 推荐(0)

[Java Spring Data] Optional<> query response, orElse, orElseThrow, ifPresent

摘要： Repo: public interface CourseRepository extends CrudRepository<Course,Integer>{ Optional<Course> findByName(String name); @Query("Select new com.examp 阅读全文

posted @ 2020-12-20 20:40 Zhentiw 阅读(198) 评论(0) 推荐(0)

2020年12月18日

[Java Spring Data] Query by example

摘要： @Test public void queryByExample() { System.out.println("\nFind the Department with the name 'Humanities' \n" + departmentRepository.findOne(Example.o 阅读全文

posted @ 2020-12-18 04:24 Zhentiw 阅读(156) 评论(0) 推荐(0)

[Java Spring data] Paging and sorting

摘要： package com.example.university.repo; import com.example.university.domain.Staff; import org.springframework.data.domain.Page; import org.springframewo 阅读全文

posted @ 2020-12-18 04:20 Zhentiw 阅读(125) 评论(0) 推荐(0)

[Java Spring data] @Query @Param

摘要： package com.example.university.repo; import com.example.university.domain.Staff; import com.example.university.domain.Student; import com.example.univ 阅读全文

posted @ 2020-12-18 04:10 Zhentiw 阅读(250) 评论(0) 推荐(0)

[Java Spring Data] Query method clauses and expressions

摘要： Entity: package com.example.university.domain; import javax.persistence.*; import java.util.ArrayList; import java.util.List; /** * JPA Entity represe 阅读全文

posted @ 2020-12-18 03:59 Zhentiw 阅读(120) 评论(0) 推荐(0)

2020年12月17日

[Javascript] Broadcaster + Operator + Listener pattern -- 27. combine multi broadcaster and compose operator to implement game logic

摘要： New broadcaster: compose: export let combine = (broadcaster1, broadcaster2) => listener => { let value1; let value2; let cancel1 = broadcaster1(value 阅读全文

posted @ 2020-12-17 15:49 Zhentiw 阅读(116) 评论(0) 推荐(0)

[Java Spring Data] JapRepository

摘要： All features of CrudRepository plus: void flush(); saveAndFlush() delteInBatch() delteAllInBatch() package com.example.university.repo; import com.exa 阅读全文

posted @ 2020-12-17 02:36 Zhentiw 阅读(126) 评论(0) 推荐(0)

[Java Spring Data] JPA Example with unit test

摘要： domain/Course.java package com.example.university.domain; import javax.persistence.*; /** * JPA Entity for a Course offered at the University. * <p> * 阅读全文

posted @ 2020-12-17 02:31 Zhentiw 阅读(141) 评论(0) 推荐(0)

[Java Spring Data] @JoinTable, @JoinColumn, joinColumns and inverseJoinColumns

摘要： @OneToMany: One Student To Many Courses. @JoinTable(name = "Enrollment"): Join Enrollment table. joinColumns: with use "student_id" to link Student an 阅读全文

posted @ 2020-12-17 02:14 Zhentiw 阅读(331) 评论(0) 推荐(0)

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