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顾鲍尔顾鲍尔
顾鲍尔
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boylegu#13 Resolve due to @Autowired lead to NullPointerException problem
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-45
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4 files changed

+184
-45
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‎src/main/java/com/boylegu/springboot_vue/App.java‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,9 +1,10 @@
11
package com.boylegu.springboot_vue;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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66

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@Configuration
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@SpringBootApplication
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public class App {
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‎src/main/java/com/boylegu/springboot_vue/controller/MainController.java‎

Lines changed: 42 additions & 43 deletions
Original file line numberDiff line numberDiff line change
@@ -18,6 +18,7 @@
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import com.boylegu.springboot_vue.controller.pagination.PaginationMultiTypeValuesHelper;
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import com.boylegu.springboot_vue.dao.PersonsRepository;
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import com.boylegu.springboot_vue.controller.pagination.PaginationFormatting;
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import java.util.*;
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@@ -26,18 +27,6 @@
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@RequestMapping("/api/persons")
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public class MainController {
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/**
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* @api {GET} /api/persons/sex Get all sexList
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* @apiName GetAllSexList
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* @apiGroup Info Manage
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* @apiVersion 1.0.0
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* @apiExample {httpie} Example usage:
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* <p>
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* http /api/persons/sex
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* @apiSuccess {String} label
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* @apiSuccess {String} value
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*/
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4130
@Autowired
4231
private PersonsRepository personsRepository;
4332

@@ -47,6 +36,18 @@ public class MainController {
4736
@RequestMapping(value = "/sex", method = RequestMethod.GET)
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public ResponseEntity<?> getSexAll() {
4938

39+
/*
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* @api {GET} /api/persons/sex Get all sexList
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* @apiName GetAllSexList
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* @apiGroup Info Manage
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* @apiVersion 1.0.0
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* @apiExample {httpie} Example usage:
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* <p>
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* http /api/persons/sex
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* @apiSuccess {String} label
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* @apiSuccess {String} value
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*/
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5051
ArrayList<Map<String, String>> results = new ArrayList<>();
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for (Object value : personsRepository.findSex()) {
@@ -62,7 +63,6 @@ public ResponseEntity<?> getSexAll() {
6263
}
6364

6465
@RequestMapping(method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
65-
//public Map<String, PaginationMultiTypeValuesHelper> getPersonsAll
6666
public Map<String, PaginationMultiTypeValuesHelper> getPersonsAll(
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@RequestParam(value = "page", required = false) Integer pages,
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@RequestParam("sex") String sex,
@@ -79,36 +79,35 @@ public Map<String, PaginationMultiTypeValuesHelper> getPersonsAll(
7979
PaginationMultiTypeValuesHelper multiValue = new PaginationMultiTypeValuesHelper();
8080
Map<String, PaginationMultiTypeValuesHelper> results = new HashMap<>();
8181

82-
Integer count, page_number;
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Object content;
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Long total;
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if (sex.length() == 0 && email.length() == 0) {
86-
count = personsRepository.findAll(pageable).getSize();
87-
page_number = personsRepository.findAll(pageable).getNumber();
88-
content = personsRepository.findAll(pageable).getContent();
89-
total = personsRepository.findAll(pageable).getTotalElements();
90-
91-
} else if (sex.length() > 0 && email.length() > 0) {
92-
count = personsRepository.findBySexAndEmailContains(sex, email, pageable).getSize();
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page_number = personsRepository.findBySexAndEmailContains(sex, email, pageable).getNumber();
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content = personsRepository.findBySexAndEmailContains(sex, email, pageable).getContent();
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total = personsRepository.findBySexAndEmailContains(sex, email, pageable).getTotalElements();
96-
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} else {
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count = personsRepository.findBySex(sex, pageable).getSize();
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page_number = personsRepository.findBySex(sex, pageable).getNumber();
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content = personsRepository.findBySex(sex, pageable).getContent();
101-
total = personsRepository.findBySex(sex, pageable).getTotalElements();
102-
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}
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multiValue.setCount(count);
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multiValue.setPage(page_number + 1);
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multiValue.setResults(content);
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multiValue.setTotal(total);
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results.put("data", multiValue);
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return results;
82+
// Integer count, page_number;
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// Object content;
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// Long total;
85+
// if (sex.length() == 0 && email.length() == 0) {
86+
// count = personsRepository.findAll(pageable).getSize();
87+
// page_number = personsRepository.findAll(pageable).getNumber();
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// content = personsRepository.findAll(pageable).getContent();
89+
// total = personsRepository.findAll(pageable).getTotalElements();
90+
// } else if (sex.length() > 0 && email.length() > 0) {
91+
// count = personsRepository.findBySexAndEmailContains(sex, email, pageable).getSize();
92+
// page_number = personsRepository.findBySexAndEmailContains(sex, email, pageable).getNumber();
93+
// content = personsRepository.findBySexAndEmailContains(sex, email, pageable).getContent();
94+
// total = personsRepository.findBySexAndEmailContains(sex, email, pageable).getTotalElements();
95+
// } else {
96+
// count = personsRepository.findBySex(sex, pageable).getSize();
97+
// page_number = personsRepository.findBySex(sex, pageable).getNumber();
98+
// content = personsRepository.findBySex(sex, pageable).getContent();
99+
// total = personsRepository.findBySex(sex, pageable).getTotalElements();
100+
// }
101+
PaginationFormatting ss = new PaginationFormatting();
102+
103+
104+
// multiValue.setCount(count);
105+
// multiValue.setPage(page_number + 1);
106+
// multiValue.setResults(content);
107+
// multiValue.setTotal(total);
108+
// results.put("data", multiValue);
109+
110+
return ss.filterQuery(sex, email, pageable);
112111
}
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114113
}

‎src/main/java/com/boylegu/springboot_vue/controller/pagination/PaginationFormatting.java‎

Lines changed: 138 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,143 @@
11
package com.boylegu.springboot_vue.controller.pagination;
22

3-
public class PaginationFormatting {
3+
import java.util.HashMap;
4+
import java.util.Map;
5+
6+
import org.springframework.stereotype.Component;
7+
import org.springframework.data.domain.Pageable;
8+
import org.springframework.data.domain.Page;
9+
import org.springframework.beans.BeansException;
10+
import org.springframework.context.ApplicationContext;
11+
import org.springframework.context.ApplicationContextAware;
12+
13+
import com.boylegu.springboot_vue.dao.PersonsRepository;
14+
import com.boylegu.springboot_vue.entities.Persons;
15+
16+
17+
@Component
18+
class SpringUtil implements ApplicationContextAware {
19+
private static ApplicationContext applicationContext = null;
20+
21+
@Override
22+
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
23+
if (SpringUtil.applicationContext == null) {
24+
SpringUtil.applicationContext = applicationContext;
25+
}
26+
}
27+
28+
public static ApplicationContext getApplicationContext() {
29+
return applicationContext;
30+
}
31+
32+
public static Object getBean(String name) {
33+
return getApplicationContext().getBean(name);
34+
}
35+
36+
public static <T> T getBean(Class<T> clazz) {
37+
return getApplicationContext().getBean(clazz);
38+
}
39+
40+
public static <T> T getBean(String name, Class<T> clazz) {
41+
return getApplicationContext().getBean(name, clazz);
42+
}
43+
}
44+
45+
46+
interface Types {
47+
public Page<Persons> query();
48+
49+
public Integer getCount();
50+
51+
public Integer getPageNumber();
52+
53+
public Long getTotal();
54+
55+
public Object getContent();
56+
}
57+
58+
class AllType implements Types {
59+
60+
61+
private Pageable pageable;
62+
63+
public String sex, email;
464

565

66+
public AllType(Pageable pageable) { //String sexName, String emailName,
67+
// super(sexName, emailName, pageable);
68+
this.pageable = pageable;
69+
}
70+
71+
public Page<Persons> query() {
72+
73+
System.out.println(SpringUtil.getBean(PersonsRepository.class).findAll());
74+
return SpringUtil.getBean(PersonsRepository.class).findAll(
75+
this.pageable
76+
);
77+
}
78+
79+
public Integer getCount() {
80+
return this.query().getSize();
81+
}
82+
83+
public Integer getPageNumber() {
84+
return this.query().getNumber();
85+
86+
}
87+
88+
public Long getTotal() {
89+
return this.query().getTotalElements();
90+
}
91+
92+
public Object getContent() {
93+
return this.query().getContent();
94+
}
695
}
96+
97+
// class SexType extends BasePaginationInfo implements Types {
98+
// public Page<Persons> query(String sexName, String emailName) {
99+
// return personsRepository.findBySex(
100+
// sexName,
101+
// pageable
102+
// );
103+
// }
104+
// }
105+
//
106+
// class SexMailType extends BasePaginationInfo implements Types {
107+
// public Page<Persons> query(String sexName, String emailName) {
108+
// return personsRepository.findBySexAndEmailContains(
109+
// sexName,
110+
// emailName,
111+
// pageable
112+
// );
113+
// }
114+
// }
115+
116+
117+
public class PaginationFormatting {
118+
119+
private PaginationMultiTypeValuesHelper multiValue = new PaginationMultiTypeValuesHelper();
120+
121+
private Map<String, PaginationMultiTypeValuesHelper> results = new HashMap<>();
122+
123+
public Map<String, PaginationMultiTypeValuesHelper> filterQuery(String sex, String email, Pageable pageable) {
124+
125+
if (sex.length() == 0 && email.length() == 0) {
126+
// Types typeInstance = new AllType(sex, email, pageable);
127+
Types typeInstance = new AllType(pageable);
128+
this.multiValue.setCount(typeInstance.getCount());
129+
130+
this.multiValue.setPage(typeInstance.getPageNumber() + 1);
131+
132+
this.multiValue.setResults(typeInstance.getContent());
133+
134+
this.multiValue.setTotal(typeInstance.getTotal());
135+
136+
this.results.put("data", this.multiValue);
137+
138+
}
139+
140+
return results;
141+
}
142+
143+
}

‎src/main/java/com/boylegu/springboot_vue/dao/PersonsRepository.java‎

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Original file line numberDiff line numberDiff line change
@@ -4,8 +4,10 @@
44
import org.springframework.data.jpa.repository.Query;
55
import org.springframework.data.domain.Page;
66
import org.springframework.data.domain.Pageable;
7+
import org.springframework.stereotype.Repository;
78

89
import com.boylegu.springboot_vue.entities.Persons;
10+
import org.springframework.web.bind.annotation.RequestParam;
911

1012
import java.util.List;
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