how to make spring mvc convert the json array to arraylist(form submit with upload file)?
1
I was using below code to submit a form with fileupload to the backend spring mvc controller.
function submit() {
var formData = new FormData();
var fileField = document.querySelector("input[type='file']");
formData.append('mail', document.getElementsByName('mail')[0].value);
formData.append('applicationName', 'myapp');
// please remove the attachment if no file attached
formData.append('attachment', fileField.files[0]);
const releaseNotes = [{
type: "java",
overview: "good"
},
{
type: "java2",
overview: "good2"
}]
formData.append('releaseNotes', releaseNotes)
fetch('springapi/addform', {
method: 'POST',
body: formData
})
.then(response => response.json())
.catch(error => console.error('Error:', error))
.then(response => console.log('Success:', JSON.stringify(response)));
}
The controller looks like below.
@RequestMapping(value = "add", method = RequestMethod.POST)
public @ResponseBody UserInfo save( UserInfo userInfo, HttpServletRequest request) throws RestException {
myService.save(userInfo);
return userInfo;
}
The object looks like below.
public class UserInfo {
private Long ID;
private String mail;
private String applicationName;
private List<ReleaseNote> releaseNotes;
}
When I ran this demo, it will report below exception.
default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.List' for property 'releaseNotes'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [com.xxx.rest.jpa.entity.ReleaseNote] for property 'releaseNotes[0]': no matching editors or conversion strategy found] (.java:24) in http-bio-8080-exec-1
ps: If there is no need to use fileupload, I can solve this issue by using RestController and post the json to backend by below.
fetch(url,
{method: 'post',
headers: {
'Accept': 'application/json',
'Content-type': 'application/x-www-form-urlencoded; charset=UTF-8'},
body: json })
But since there is fileupload, so I have to use FormData instead of passing json to backend. How to solve this issue? Thanks.
spring spring-mvc
asked Nov 22 '18 at 7:59
liam xuliam xu
1,09031935
add a comment |
1
I was using below code to submit a form with fileupload to the backend spring mvc controller.
function submit() {
var formData = new FormData();
var fileField = document.querySelector("input[type='file']");
formData.append('mail', document.getElementsByName('mail')[0].value);
formData.append('applicationName', 'myapp');
// please remove the attachment if no file attached
formData.append('attachment', fileField.files[0]);
const releaseNotes = [{
type: "java",
overview: "good"
},
{
type: "java2",
overview: "good2"
}]
formData.append('releaseNotes', releaseNotes)
fetch('springapi/addform', {
method: 'POST',
body: formData
})
.then(response => response.json())
.catch(error => console.error('Error:', error))
.then(response => console.log('Success:', JSON.stringify(response)));
}
The controller looks like below.
@RequestMapping(value = "add", method = RequestMethod.POST)
public @ResponseBody UserInfo save( UserInfo userInfo, HttpServletRequest request) throws RestException {
myService.save(userInfo);
return userInfo;
}
The object looks like below.
public class UserInfo {
private Long ID;
private String mail;
private String applicationName;
private List<ReleaseNote> releaseNotes;
}
When I ran this demo, it will report below exception.
default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.List' for property 'releaseNotes'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [com.xxx.rest.jpa.entity.ReleaseNote] for property 'releaseNotes[0]': no matching editors or conversion strategy found] (.java:24) in http-bio-8080-exec-1
ps: If there is no need to use fileupload, I can solve this issue by using RestController and post the json to backend by below.
fetch(url,
{method: 'post',
headers: {
'Accept': 'application/json',
'Content-type': 'application/x-www-form-urlencoded; charset=UTF-8'},
body: json })
But since there is fileupload, so I have to use FormData instead of passing json to backend. How to solve this issue? Thanks.
spring spring-mvc
asked Nov 22 '18 at 7:59
liam xuliam xu
1,09031935
Could you also post yourReleaseNoteclass?
– Sven Hakvoort
Nov 22 '18 at 9:27
add a comment |
1
1
1
1
I was using below code to submit a form with fileupload to the backend spring mvc controller.
function submit() {
var formData = new FormData();
var fileField = document.querySelector("input[type='file']");
formData.append('mail', document.getElementsByName('mail')[0].value);
formData.append('applicationName', 'myapp');
// please remove the attachment if no file attached
formData.append('attachment', fileField.files[0]);
const releaseNotes = [{
type: "java",
overview: "good"
},
{
type: "java2",
overview: "good2"
}]
formData.append('releaseNotes', releaseNotes)
fetch('springapi/addform', {
method: 'POST',
body: formData
})
.then(response => response.json())
.catch(error => console.error('Error:', error))
.then(response => console.log('Success:', JSON.stringify(response)));
}
The controller looks like below.
@RequestMapping(value = "add", method = RequestMethod.POST)
public @ResponseBody UserInfo save( UserInfo userInfo, HttpServletRequest request) throws RestException {
myService.save(userInfo);
return userInfo;
}
The object looks like below.
public class UserInfo {
private Long ID;
private String mail;
private String applicationName;
private List<ReleaseNote> releaseNotes;
}
When I ran this demo, it will report below exception.
default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.List' for property 'releaseNotes'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [com.xxx.rest.jpa.entity.ReleaseNote] for property 'releaseNotes[0]': no matching editors or conversion strategy found] (.java:24) in http-bio-8080-exec-1
ps: If there is no need to use fileupload, I can solve this issue by using RestController and post the json to backend by below.
fetch(url,
{method: 'post',
headers: {
'Accept': 'application/json',
'Content-type': 'application/x-www-form-urlencoded; charset=UTF-8'},
body: json })
But since there is fileupload, so I have to use FormData instead of passing json to backend. How to solve this issue? Thanks.
spring spring-mvc
asked Nov 22 '18 at 7:59
liam xuliam xu
1,09031935
I was using below code to submit a form with fileupload to the backend spring mvc controller.
function submit() {
var formData = new FormData();
var fileField = document.querySelector("input[type='file']");
formData.append('mail', document.getElementsByName('mail')[0].value);
formData.append('applicationName', 'myapp');
// please remove the attachment if no file attached
formData.append('attachment', fileField.files[0]);
const releaseNotes = [{
type: "java",
overview: "good"
},
{
type: "java2",
overview: "good2"
}]
formData.append('releaseNotes', releaseNotes)
fetch('springapi/addform', {
method: 'POST',
body: formData
})
.then(response => response.json())
.catch(error => console.error('Error:', error))
.then(response => console.log('Success:', JSON.stringify(response)));
}
The controller looks like below.
@RequestMapping(value = "add", method = RequestMethod.POST)
public @ResponseBody UserInfo save( UserInfo userInfo, HttpServletRequest request) throws RestException {
myService.save(userInfo);
return userInfo;
}
The object looks like below.
public class UserInfo {
private Long ID;
private String mail;
private String applicationName;
private List<ReleaseNote> releaseNotes;
}
When I ran this demo, it will report below exception.
default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.List' for property 'releaseNotes'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [com.xxx.rest.jpa.entity.ReleaseNote] for property 'releaseNotes[0]': no matching editors or conversion strategy found] (.java:24) in http-bio-8080-exec-1
ps: If there is no need to use fileupload, I can solve this issue by using RestController and post the json to backend by below.
fetch(url,
{method: 'post',
headers: {
'Accept': 'application/json',
'Content-type': 'application/x-www-form-urlencoded; charset=UTF-8'},
body: json })
But since there is fileupload, so I have to use FormData instead of passing json to backend. How to solve this issue? Thanks.
spring spring-mvc
spring spring-mvc
asked Nov 22 '18 at 7:59
liam xuliam xu
1,09031935
asked Nov 22 '18 at 7:59
liam xuliam xu
1,09031935
asked Nov 22 '18 at 7:59
liam xuliam xu
1,09031935
asked Nov 22 '18 at 7:59
liam xuliam xu
1,09031935
asked Nov 22 '18 at 7:59
liam xuliam xu
1,09031935
1,09031935
Could you also post yourReleaseNoteclass?
– Sven Hakvoort
Nov 22 '18 at 9:27
add a comment |
Could you also post yourReleaseNoteclass?
– Sven Hakvoort
Nov 22 '18 at 9:27
Could you also post your
ReleaseNote class?– Sven Hakvoort
Nov 22 '18 at 9:27
Could you also post your
ReleaseNote class?– Sven Hakvoort
Nov 22 '18 at 9:27
add a comment |
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Could you also post your
ReleaseNoteclass?– Sven Hakvoort
Nov 22 '18 at 9:27